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.

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