use the substitution to solve the system

label Algebra
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substitution to solve the system

x=2y-9

2x-5y=-22

Jun 7th, 2015

2(2y-9)-5y =-22

4y-5y=-22+18=-4

-y =-4

y=4

x =2*4-9 =-1

x= -1 y=4

Jun 7th, 2015

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Jun 7th, 2015
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