A) 2x + 4 / 3 = 4x / 7.
- . (6x + 4) / 3 = 4x / 7.
- . 7(6x + 4) = 4x * 3.
- . 42x + 28 = 12x.
- . 30x = - 28.
- . X = - 28 / 30.
- . X = - 14 / 15.
- . b) 1 / 5x - 7 = - 3 / 2x - 8 .
- . 1 / 5x + 3 / 2x = - 8 + 7.
- . ( 2x + 15x) / 10 = - 1.
- . 17x = - 10 .
- . X = - 10 / 17.
- . c)x - 5 / x + 6 = 4 / 3.
- . x - 5 / x = 4 / 3 - 6.
- . x - 5 / x = ( 4 - 18) / 6.
- . x - 5 / x = - 14 / 6.
- . x - 5 = - 7 / 3x.
- . X + 7 / 3x = 5.
- . (3x + 7x) / 3 = 5.
- . 10x = 15.
- . X = 3 / 2.
- . d)6 / 5 = x - 7 / 2(x + 1) .
- . 6 / 5 = x - 7 / 2x - 7 / 2.
- . 6 / 5 + 7 / 2 = (2x - 7x) / 2.
- . 2 * (12 + 35) / 10 = - 5x.
- . 47 / 5 = - 5x.
- . - 47 / 25 = .
- .