Question

Resolva as equações
a) 4x+9+x-6
b) 5x-3+2x+x+3x
c) 2x+4_x=2(x+1)
d) 5(3x+2) =4 -10

Answer 1

a) 4x + 9 + x - 6 
4x + x + 9 - 6
5x + 3

b) 5x - 3 + 2x + x + 3x 
5x + 2x + x + 3x - 3
11x - 3

c) 2x + 4x = 2.(x + 1) 
2x + 4x = 2x + 2
6x = 2x + 2
6x - 2x = 2
4x = 2
x = 2/4
x = 1/2

d) 5.(3x + 2) = 4 -10
15x + 10 = - 6
15x = - 6 - 10
15x = - 16
x = - 16/15

Bons estudos!