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1 ) 7q=15+11q-3
7q-11q = 15-3
-4q = 12
q = -3

2 ) 2b-6=b+7
2b-b = 6+7
b = 13

3 ) 2p+1=0.4p+9
2p-0.4p = 9-1
1.6p = 8
p = 5

4 ) 6m+4m-2=8+5m
10m-5m = 8+2
5m = 10
m = 2

5 ) 7+2e=9e-14-6e
9e-6e-2e = 7+14
e = 21

6 ) 5(m-1)=3m-7
5m-5 = 3m-7
5m-3m = 5-7
2m = -2
m = -1

7 ) 5y-4(3y-2)=-20
5y-12y+8 = -20
-7y = -28
y = 4

8 ) 5(y+4)-6(8+3y)=-2
5y+20-48-18y = -2
-13y = 28-2
-13y = 26
y = -2

9 ) 7k-(9k-16)=14-(19-k)
7k-9k+16 = 14-19+k
-3k = -21
k = 7

10 ) 3[4(2.5-q)+1]=13-2q
3(10-4q)+3 = 13-2q
30-12q+3 = 13-2q
10q = 20
q = 2

11 ) 2[p-2(p+1)]-1=8p+25
2(-p-2)-1 = 8p+25
-2q-5 = 8p+25
10p = -30
p = -3

1. 7q=15+11q-3
4q=-12
q=-3

2. 2b-6=b+7
2b-b=7+6
b=13

3. 2p+1=0.4p+9
1.6p=8
p=5

4. 6m+4m-2=8+5m
10m-5m=8+2
5m=10
m=2

5. 7+2e=9e-14-6e
7+14=3e-2e
e=21

6. 5(m-1)=3m-7
5m-5=3m-7
2m=-7+5
2m=-2
m=-1

7. 5y-4(3y-2)=-20
5y-12y+8=-20
28=7y
y=4

8. 5(y+4)-6(8+3y)=-2
5y+20-48-18y=-2
13y=-26
y=-2

9. 7k-(9k-16)=14-(19-k)
7k-9k+16=14-19+k
7k-9k-k=14-19-16
-3k=-21
k=7

10. 3[4(2.5-q)+1]=13-2q
3[(10-4q)+1]=13-2q
30-12q+3=13-2q
-10q=-21
q=2

11. 2[p-2(p+1)]-1=8p+25
2[p-(2p+2)]-1=8p+25
2(p-2p-2)-1=8p+25
2p-4p-4-1=8p+25
-10p=30
p=-3