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Mathematics 11 Online
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

Parth (parthkohli):

b is the answer.

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