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Aira50
@Aira50
April 2020
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Modo substituição..
A{ 2x+y=5 B { 3x+y=5 C { y = 4-2x
x+2y=4 2x+y=4 5x-2y=1
Por favor me respondei neste jeito :
Ex: x+y=3 2.(3-y)+3y+8
x=3-y 6-2y+3y=8
..................
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camiilla
A)2x+y=5 x+2y b)3x+y 2x+y c)y=4-2x 5.1-2y=1
2.2+1= 2+2.1 3.1+2 2.1+2 y=4-2.1 5-2.2=1
4+1=5 4 5 4 y=2 85-4=1
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2.2+1= 2+2.1 3.1+2 2.1+2 y=4-2.1 5-2.2=1
4+1=5 4 5 4 y=2 85-4=1