Question

Resolva o sistema pelo metodo de substituiçao
X+y=+3
3×-y=3-2

Answer 1

x+y=3

3x-y=3-2

x=3-y

3(3-y)-y=3-2

9-3y-y=1

-4y=1-9

-4y=8

(-1)

4y=8

y=8/4

y=2

x+2=3

x=3-2

x=1