1. - 50 (-3m+10) = -200 2. - 62 (2n+22) = -1860 3. - 11z+52=41z 4. 14 (3x-5) = 19x-1 5. 88+99b=187+b 6. 77+100x=177+x 7. 38-5aa=34-4a 8. 26-4z=28-2z 9. 10+9a=26+a 10. - 20 (-10x+4) = 120

1. - 50 (-3m+10) = -200

150m-500=-200

150m=500-200

150m=300

m=300:150

m=2

2. - 62 (2n+22) = -1860

-124n-1364=-1860

-124n=1364-1860

-124n=-496

124n=496

n=4

3. - 11z+52=41z

-11z-41z=-52

52z=52

z=1

4. 14 (3x-5) = 19x-1

42x-70=19x-1

42x-19x=70-1

23x=69

x=3

5. 88+99b=187+b

99b-b=187-88

98b=99

b=99/98

6. 77+100x=177+x

100x-x=177-77

99x=100

x=100/99

7. 38-5a=34-4a

-5a+4a=34-38

-a=-4

a=4

8. 26-4z=28-2z

-4z+2z=28-26

-2z=2

z=-1

9. 10+9a=26+a

9a-a=26-10

8a=16

a=2

10. - 20 (-10x+4) = 120

200x-80=120

200x=200

x=1