Question

1).3y + 15 = 5y - 1
2).3a/4 + 18 = 10a/3 - 2
3).1/2 (3x - 6) = 2/3 (2x - 3)
4).2 + 11/b = 7 1/2

Answer 1

3Y + 15 = 5y - 1
3Y - 5y = -1 - 15
-2y = -16
Y = -16/-2
Y = 8

3a/4 + 18 = 10a/3 - 2
3a/4 - 10a/3 = -2 - 18
9a/12 - 40a/12 = -20
-31a = -240
a = -240/-31

3x/2 - 3 = 4x/3 - 2
3x/2 - 4x/3 = -2 + 3
9x/6 - 8x/6 = 1
x/6 = 1
x = 6

11/b = 7/2 - 2
11/b = 7/2 - 4/2
11/b = 3/2
3b = 22
b = 22/3