1-resolva as equações do 1ºgrau. a)2x+3=-7-3x
b)x-2/4-x-4/12=1/3
c)12-3x=3(1-2x)
d)x-3/6=2x+1/4-1
b)x-2/4-x-4/12=1/3
c)12-3x=3(1-2x)
d)x-3/6=2x+1/4-1
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