3c/0.5 = 36c = 3c = 0.5
9a/0.9 = 410a = 4a = 0.4
8x - 0.5x - 5 = 2.57.5x - 5 = 2.57.5x = 7.5x = 1
3 - 1/2x = 0-1/2x = -3x = 6
1/2a - 1/2 = 1/21/2a = 1a = 2
1 1/4x + 1 = 2 1/45/4x + 1 = 9/45/4x = 8/4x = 8/5 = 1.6
1/4x + 1/4x = 21/2x = 2x = 4
3c/0.5 = 3
6c = 3
c = 0.5
9a/0.9 = 4
10a = 4
a = 0.4
8x - 0.5x - 5 = 2.5
7.5x - 5 = 2.5
7.5x = 7.5
x = 1
3 - 1/2x = 0
-1/2x = -3
x = 6
1/2a - 1/2 = 1/2
1/2a = 1
a = 2
1 1/4x + 1 = 2 1/4
5/4x + 1 = 9/4
5/4x = 8/4
x = 8/5 = 1.6
1/4x + 1/4x = 2
1/2x = 2
x = 4