1) 4(5-x) = -5x + 20 - 4x = -5x + 15 = x
2) 3 - 5x = 5x = x = 3/5
3) 5(3 - 2x) - (12 + 7x) = 15 - 10x - 12 - 7x = 3 = 17x = 3/17
1) 4(5-x) = -5x +
20 - 4x = -5x +
15 = x
2) 3 - 5x =
5x =
x = 3/5
3) 5(3 - 2x) - (12 + 7x) =
15 - 10x - 12 - 7x =
3 = 17
x = 3/17