Resolva os sistemas
A) x=5y= 10
5+y 12
B) x-y= 10
2 x+3y = 10
C) x+y=3
12x-9y=-20
D) 2x+y=7
5x-2y=-5
Soluções para a tarefa
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a)x+y=9
x-y=1
b)x-y=3
x+y=7
c)2x+y=7
x-y=2
d)x-5y= -9
2x-5y=4
e)3x+2y=5
6x+2y=0
f)10x+6y=16
12x-6y=72
g)2x.y=7
x+5y=26
h)5x-y=-6
x+3y=10
x-y=1
b)x-y=3
x+y=7
c)2x+y=7
x-y=2
d)x-5y= -9
2x-5y=4
e)3x+2y=5
6x+2y=0
f)10x+6y=16
12x-6y=72
g)2x.y=7
x+5y=26
h)5x-y=-6
x+3y=10
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