Question

a) 2x+30=50, b)5x-18=3x+20, c) 4 (2x+3)=2. (3x-15)

Answer 1

a) 2x + 30 = 50
   2x = 50 - 30
   2x = 20
    x = 20/2
    x = 10
b) 5x - 18 = 3x + 20
    5x - 3x = 20 + 18
    2x = 38
     x = 38/2
    x = 19
c) 4(2x + 3) = 2(3x - 15)
    8x + 12 = 6x - 30
    8x - 6x = -30 - 12
    2x = - 42
     x = -42/2
     x = -21