x + 1/4 = 1/2x = 1/2 - 1/4x = 2/4 - 1/4x = 1/4
5/8 + x = 7/8x = 7/8 - 5/8x = 2/8x = 1/4
9/17 - x = 5/17x = 9/17 - 5/17x = 4/17
x - 4/9 = 5/9x = 5/9 + 4/9x = 9/9x = 1/1x = 1
x + 1/4 = 1/2
x = 1/2 - 1/4
x = 2/4 - 1/4
x = 1/4
5/8 + x = 7/8
x = 7/8 - 5/8
x = 2/8
x = 1/4
9/17 - x = 5/17
x = 9/17 - 5/17
x = 4/17
x - 4/9 = 5/9
x = 5/9 + 4/9
x = 9/9
x = 1/1
x = 1