bmgtcreative bmgtcreative

02-05-2018
Mathematics

contestada

system of equations

y=2x-3
x+y=18

Respuesta :

mamercier21 mamercier21

02-05-2018

2x-3=-1x+18
+1x +1x
3x-3=18
+3 +3
3x=21
divide both sides by 3
x=7

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