Question

Resolva os sistemas abaixo:
a) x+y=250
x-y=32
b)x-2y=-4
x-y=4
POR FAVOR !!

Answer 1

a) x+y=250-->x=250-y
250-y-y=32-->2y=218. y=109 x=250-109=141
b)x-2y=-4-->x=2y-4
x-y=4 -->2y-4-y=4 y=8 x=12