Question

Resolva:

A) 2x + 3x + 9 = 8 . (6-x)

B) 4x + 6 - 2x = x - 6 + 10 +15

C) 3 . ( x + 3) - 5 (x - 2) = 12

Answer 1

A)5x+9=48-8x 8x+5x=48-9 13x=39 x=3 B) 2x+6=x-19 2x-x=-19-6 x=-25 C)3x+9-5x+10=12 -2x+19=12 -2x=12-19 -2x=-7(-1) 2x=7 x=7/2