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SunHee111
@SunHee111
December 2019
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Aplicando o método da comparação, resolva os sistemas:
a) {x + y = 13
x - 2y = 1
b) {y = 6x
3x - 2y = 54
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guilhermecolem
X=13-y
x=1+2y
13-y=1+2y
12=3y
y=4
x+y=13
x+4=13
x=9
b) y=6x
y=(54-3x)/-2
y=6x
y=-27+3x/2
6x=-27+3x/2
9x/2=-27
9x=-54
x=-6
y=6x
y=6(-6)
y=-36
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x=1+2y
13-y=1+2y
12=3y
y=4
x+y=13
x+4=13
x=9
b) y=6x
y=(54-3x)/-2
y=6x
y=-27+3x/2
6x=-27+3x/2
9x/2=-27
9x=-54
x=-6
y=6x
y=6(-6)
y=-36