Can someone help me with this substitution method for algebra Y=4*-3x 5x-y=22

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asked Jan 10, 2016 70.8k views

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Can someone help me with this substitution method for algebra Y=4*-3x 5x-y=22

Mathematics
high-school

Anunay asked

by Anunay

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$y=4-3x\\ 5x-y=22\\\\ 5x-(4-3x)=22\\ 5x-4+3x=22\\ 8x=26\\ x=(26)/(8)=(13)/(4)\\\\ y=4-3\cdot(13)/(4)\\ y=4-(39)/(4)\\ y=(16)/(4)-(39)/(4)\\ y=-(23)/(4)\\\\ \boxed{(x,y)=\left((13)/(4),-(23)/(4)\right)}$

Luke Joshua Park answered Jan 14, 2016

by Luke Joshua Park

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