Question

preciso de ajuda com a seguinte expressão linear x+y=50 e x-y=10

Answer 1

x+y=50
x=50-y
x-y=10
x=50-2
x=48
50-y-y=10
-y-y=10-50
-2y=-40(x1)
y=2

Answer 2

x+y=50
x=50-y
x-y=10
x=50-2
x=48
50-y-y=10
-y-y=10-50
-2y=-40(x1)
y=2