AnswersSS-Math 7Solving Multi-Step Equations

Solving Multi-Step Equations Answers

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4

Zachary is solving the following equation.Which is the best first step to begin to simplify the equation?

Question illustration
A
Multiply both sides of the equation by .
Option A
B
Divide both sides of the equation by .
Option B
C
Distribute over (x – 8).
Option C
D
Distribute over (x – 8).
Option D
6

The Schwartz family spent a total of $111.75 for Internet service for 3 months. Eachmonth they received $5.50 as a credit on the bill. Which equation and solution showsthe cost of their monthly Internet service before the credit?

A
; the monthly Internet service is $31.75
Option A
B
; the monthly Internet service is $42.75
Option B
C
; the monthly Internet service is $42.75
Option C
D
; the monthly Internet service is $31.75
Option D
7

Celia uses the steps below to solve the equation .Step 1Distribute over the expression in parentheses.Step 2Simplify like terms.Step 3Subtract 3 from both sides of the equation.Step 4Divide both sides of the equation by –14.Which corrects the error in the step in which Celia made the first error?

Question illustration
A
In step 1, she should have also distributed over 2d, to get .
Option A
B
In step 1, she should have also distributed over –16d, to get .
Option B
C
In step 3, she should have added 3 to both sides of the equation to get .
Option C
D
In step 3, she should have first divided both sides by –14 to get .
Option D
8

A company is making new soccer uniforms for a team. The company uses 2.5 yards of fabric for each shirt. The company uses 82.5 yards of fabric to make shirts and shorts for 15 players. The equation and solution below represents the situation.What does the solution, , represent?

Question illustration
A
the total fabric needed for the shirts
B
the total fabric for each shirt and each pair of shorts
C
the amount of fabric left over after making the shirts and shorts
D
the amount of fabric needed for each pair of shorts
9

Gisele trains 7 days per week for a biathlon. She covers a total of 20 miles cycling and running each day. Gisele cycles a total of 105 miles each week, and runs a certain number of miles per week. If she cycles the same number of miles each day and runs the same number of miles each day, the equation represents the situation. Which describes the solution, , to this equation?

Question illustration
A
The solution is 5, which represents the number of miles she runs each day.
B
The solution is 5, which represents the number of miles she runs each week.
C
The solution is 35, which represents the number of miles she runs each day.
D
The solution is 35, which represents the number of miles she runs each week.
10

A group of 8 friends went to lunch and spent a total of $76, which included the food bill and a tip of $16. They decided to split the bill and tip evenly among themselves. Which equations and solutions describe the situation? Select two options.

A
The equation represents the situation, where x is the food bill.
Option A
B
The equation represents the situation, where x is the food bill.
Option B
C
The solution represents the total food bill.
Option C
D
The solution represents each friend’s share of the food bill and tip.
Option D
E
The equation represents the situation, where x is the food bill.
Option E

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