Mathematics
Coco4Cocoa
2015-11-06 10:43:57
4x+3y=13 solve by using substitution method. y=-x/4
ANSWERS
rakiyah
2015-11-06 17:26:55

subsitute -x/4 for y 4x+3y=13 4x+3(-x/4)=13 4x-3x/4=13 times both sides by 4 because we hate fractions 16x-3x=52 13x=52 divide both sides by 13 x=4 sub back y=-x/4 y=-4/4 y=-1 (x,y) (4,-1) the solution is (4,-1)

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