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

-3m+10=-200 / (-50)

-3m=4-10

-3m=-6

m=2

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

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

2n=30-22

2n=8

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=99b

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=4

z=-2

9. 10+9a=26+a

9a-a=26-10

8a=16

a=2

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

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

-10x=-6-4

-10x=-10

x=1