Question

Resolva o Sistema

x+y=3

2x+3y=7

Answer 1

x+y=3
2x+3y=7

y=3-x
2x+3 (3-x)=7
2x+9-3x=7
2x-3x=7-9
-x=-2 (-1)
x=2

y=3-x
y=3-2
y=1