1) 108/90 = 42/5x1.2 = 8.4xx = 1.2 / 8.4x = 0.142857
2) (7x-3)/4 = (5-2x)/6(7x-3)6 = 4(5-2x)42x - 18 = 20 - 8x42x + 8x = 20 + 1850x = 38x = 38 / 50x = 0.76
3) 5/(2x) = 3/(4-x)5(4-x) = 3(2x)20 - 5x = 6x20 = 11xx = 20 / 11x = 1.818
4) 2/(6-x) = 4/(5x+3)2(5x+3) = 4(6-x)10x + 6 = 24 - 4x10x + 4x = 24 - 614x = 18x = 18 / 14x = 1.2857
1) 108/90 = 42/5x
1.2 = 8.4x
x = 1.2 / 8.4
x = 0.142857
2) (7x-3)/4 = (5-2x)/6
(7x-3)6 = 4(5-2x)
42x - 18 = 20 - 8x
42x + 8x = 20 + 18
50x = 38
x = 38 / 50
x = 0.76
3) 5/(2x) = 3/(4-x)
5(4-x) = 3(2x)
20 - 5x = 6x
20 = 11x
x = 20 / 11
x = 1.818
4) 2/(6-x) = 4/(5x+3)
2(5x+3) = 4(6-x)
10x + 6 = 24 - 4x
10x + 4x = 24 - 6
14x = 18
x = 18 / 14
x = 1.2857