Solving equations combining like terms (step by step)

1. 7m-5-13m=25

2. 12.25=0.5q+3.75

3. 2 (2x-4) + x=7

4. 8=3 (3x+8) - x

5. 3t-18t+4=-26

6. 13.75=0.25b+0.50

1.

7m-5-13m = 25

-5-6m = 25

-6m = - 5

2.

12.25 = 0.5q+3.75

8.5 = 0.5q

17 = q

3.

2 (2x-4) + x = 7

4x-8 = 7

5x-8 = 7

5x = 15

4.

8 = 3 (3x=8) - x

8 = 9x+24-x

8 = 8x+24

-16 = 8x

-2 = x

5.

3t-18t+4 = - 26

-15t+4 = - 26

-15t = - 30

t = 2

6.

13.75 = 0.25b+0.5

13.75 = 0.25b

53 = b