Question

1. 3(1-q) + 4 (q-5) = -5
2. 1/2 x + 3 = 9
3. 1/2 x -5 = 10
4. 3/4 y - 1/5 y = 2
5. x/2 = x/7 = -10

Answer 1

1.) 3-3q + 4q-20 = -5
    -17 + q = -5
    1 = 12

2.) 1/2 x = 9/3
     1/2 x = 3
      x = 6

3.) 1/2 x = 10 + 5
     1/2 x = 15 => x = 30

4.) (15-4)/20 y = 2
      11 y = 40
       y = 40/11 = 3,6

5.) kalo soalnya x/2 - x/7 = -10
     berarti (7x - 2x)/14 = -10
     5x = -140
     x = 28