06-04-2017
Mathematics

contestada

2x+2y=4 y=12-3x
Substitution

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edrush1957G edrush1957G

06-04-2017

2x + 2(12-3x)=4
2x+ 2 x 12 + 2 x 3x = 4
2x + 24 + 6x = 4
6x + 2x = 8x
8x + 24 = 4
24/4 4/4
6 = 8x
x= .75

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