Respostas
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a) x/3+4=2x
x/3-2x=-4
x-6x=-12
-5x=-12 (-1)
5x=12
x=12/5
b) x/6+x/4=x/3-1
mmc
2x+3x=4x-12
5x-4x=-12
x=-12
x/3-2x=-4
x-6x=-12
-5x=-12 (-1)
5x=12
x=12/5
b) x/6+x/4=x/3-1
mmc
2x+3x=4x-12
5x-4x=-12
x=-12
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e) x/3+×/2= 7+x/3