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4- Resolva as equações
a) 10x9x+2x=2-3x
b) 4x-4-5x=-6+90
c) 2-3x=-2x+12-3x
d) 7(x-5)=3(x+1)
e) 3(x-2)=4(-x+3)
f) 13+4(2x-1)=5(x+2)
g) 4(x+5)+3(x+5)=21​​