Luis solves the following system of equations by elimination. 5 s plus 3 t is equal to 30 2 s plus 3 t is equal to negative 3 What is the value of s in the solution of the system?
Answer
A
11
B
25 thirds
C
33
D
27 sevenths
Explanation
Subtract the second equation, 2s + 3t = -3, from the first, 5s + 3t = 30. The 3t terms cancel, leaving 3s = 33, so s = 11. The correct choice is A, 11.
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