1) x + 7/12 = 3/x = 3/4 - 7/1x = 9/12 - 7/1x = 2/1x = 1/6
3) x - 3/5 = 3/x = 3/8 + 3/x = 15/40 + 24/4x = 39/40
5) y + 2/7 = 1/y = 1/3 - 2/y = 7/21 - 6/2y = 1/21
7) y - 3/8 = 5/3y = 5/32 + 3/y = 5/32 + 12/3y = 17/32
1) x + 7/12 = 3/
x = 3/4 - 7/1
x = 9/12 - 7/1
x = 2/1
x = 1/6
3) x - 3/5 = 3/
x = 3/8 + 3/
x = 15/40 + 24/4
x = 39/40
5) y + 2/7 = 1/
y = 1/3 - 2/
y = 7/21 - 6/2
y = 1/21
7) y - 3/8 = 5/3
y = 5/32 + 3/
y = 5/32 + 12/3
y = 17/32