Question

Resolver as equações abaixo:
a) 10x + 16 = 14x + 8

b) 2(x -3) = - 3(x - 3)

c) 4(5x -3) - 64(3 -x) - 3(12x - 4) =96

d) 5(x +1) + 6(x + 2) = 9(x + 3)

Answer 1

a) 10x+16=14x+8
10x-14x=8-16
-4x=-8.(-1)
4x=8
x=8/4
x=2
b) 2.(x-3)=-3.(x-3)
2x-6=-3x+9
2x+3x=9+6
5x=15
x=15/5
x=3
c) 4.(5x-3)-64.(3-x)-3.(12x-4)=96
20x-12-192+64x-36x+12=96
20x+64x-36x=96-12+192+12
84x-36x=84+204
48x=288
x=288/48
x=6
d) 5.(x+1)+6.(x+2)=9.(x+3)
5x+5+6x+12=9x+27
5x+6x-9x=27-12-5
11x-9x=27-17
2x=10
x=10/2
x=5