Resolva os sistemas abaixo.
a) { 4x - 3y = 14 } b) { 6x + y = 2 }
{ x - 2y = 6 } { 5x + 2y = 11}
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a) {4x-3y=14
{x-2y=6. (-4)
{4x-3y=14
{-4x+2y=-24
-y=-10.(-1)
y=10
4x-3y=14
4x-3.10=14
4x-30=14
4x=14+30
4x=44
x=44/4
x=11
b) {6x+y=2
{5x+2y=11
{6x+y=2.(-2)
{-12x-2y=-4
{5x+2y=11
-7x=7.(-1)
7x=-7
x=-7/7
x=-1
5x+2y=11
5.(-1)+2y=11
-5+2y=11
2y=11+5
2y=16
y=16/2
y=8
{x-2y=6. (-4)
{4x-3y=14
{-4x+2y=-24
-y=-10.(-1)
y=10
4x-3y=14
4x-3.10=14
4x-30=14
4x=14+30
4x=44
x=44/4
x=11
b) {6x+y=2
{5x+2y=11
{6x+y=2.(-2)
{-12x-2y=-4
{5x+2y=11
-7x=7.(-1)
7x=-7
x=-7/7
x=-1
5x+2y=11
5.(-1)+2y=11
-5+2y=11
2y=11+5
2y=16
y=16/2
y=8
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