Question

resolva os sistemas abaixo: 3x+2y=10 2x-y=2

Answer 1

{3x+2y=10
{2x-y=2
2x-y=2 × (2)
{3x+2y=10
{4x-2y=4
7x=14
x=14/7
x=2
2x-y=2
2.2-y=2
4-y=2
-y=2-4
-y=-2.(-1)
y=2
S={(2, 2)}