Question

resolva as equações

A ) 4x+9=x-6

B) 5x-3+2x=x+3x

C) 2x+4-x=2 (x+1)

Answer 1

a) 4x - x = - 6 - 9
    3x = - 15
    x = -15/3
    x = -5

b) 5x + 2x - x - 3x = 3
    3x = 3
    x = 3/3
    x = 1

c) 2x + 4 - x = 2x + 2
    2x - 2x - x = + 2 - 4
    - x = - 2
    x = 2