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OpenStudy (anonymous):
using substitution to solve the system x=2y+3 and 4x-5=9, which of the following could be the first step? a. x-2y=3 4x-5y=9 b. 4(2y+3)-5y=9 c. x+2y=4x-5y d.5x-3y=12 e. -3x+7y=-6
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Parth (parthkohli):
b is the answer.
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