Question

Resolva as equações.
a) 3(x-1)-2(x-3)=10
b) 2(x-6)=-3(5+x)
c) 3(x-1)-2(2x-4)=1
d) 7(x-1)-2(x-5)=x-5

Answer 1

a) 3x-3-2x+6=10-> 3x-2x=10+3-6-> x=7
b) 2x-12= -15-3x -> 2x+3x=-15+12 -> 5x=-3 -> x=-3/5
c)3x-3-4x+8=1 -> 3x-4x=1-8+4 -> -x=-3 (x1) -> x=3
d) 7x-7-2x+10=x-5 -> 7x-2x-x=-5+7-10 -> 4x=-8 -> x= -8/4 -> x=-2