Explanation:
3)
5+4(n+9)=-3
5+4n+ 36= -3
4n= -44
n= -11
.......
4)
5(k-2)-8k= -34
5k-10-8k = -34
-3k = -24
k= 8
.........
5)
2= 11+3(m+3)
2=11 +3m+9
3m= 2-20
3m= -18
m= -6
.....
6)
-2(p-5)+7p=-5
-2p+10+7p= -5
5p= -15
p= -3
......
7)
4a-2(a+9)=6
4a - 2a -18= 6
2a = 24
a= 12
....
9)
8x- 11(x-2)= -8
8x-11x +22= -8
-3x = -30
x = 10
8)
7-4(d-3)= 23
7-4d + 12= 23
-4d = 4
d = -1
10)
5= 6(q-5)-19
5= 6q -30 -19
6q = 54
q = 9
11)
3(3-y)+1= 31
9-3y+1= 31
-3y = 21
y= -7
12)
5(2v+4)= 170
10v+ 20= 170
10v= 150
v= 15
13)
5(4n-4)= -60
20n-20= -60
20n= -40
n= -2
14)
2(3t-8)-4t= 10
6t- 16-4t= 10
2t = 26
t= 13
15)
9-4(2p-1)= 45
9-8p+4 = 45
-8p = 32
p= -4
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