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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