4) (-6) + x = 5
x = 5 + 6
x = 11
5) x – 8 = 2
x = 2 + 8
x = 10
6) (-1) + x = -5
x = -5 + 1
x = -6
7) (-3) + x = 0
x = 0 + 3
x = 3
8) -4 – x = 0
x = 0 + 4
x = 4
9) 18 – x = 6
x = 6 – 18
x = -12
10) 20 – x = -4
x = -4 – 20
}x = -24
11) x + (-5) = 13
x = 13 + 5
x = 18
12) x – (-8) = -4
x = -4 + 8
x = -12
13) 3x = 12
x = 12/3
x = 4
14) 5x = 45
x = 45/5
x = 0
15) 4x = -20
x = -20/4
x = -5
16) -2x = 12
x = 12/-2
x = -6
17) -6x = 18
x = 18/-6
x = -3
18) 5x + 3 = 28
5x = 28 – 3
5x = 25
x = 25/5
x = 5
19) 7y + 5 = 26
7y = 26 – 5
7y = 21
y = 21/7
y = 3
20) 9z – 5 = 31
9z = 31 + 5
9z = 31 + 5
9z = 36
Z = 36/9
Z = 4
21) 3a – 2 = -17
3a = -17 + 2
3a = -15
a = -15/3
a = -5
22) 4b + 3 = -13
4b = -13 – 3
4b = -16
b = -16/4
b = -4
23) 34 – 3x = -20
-3x = -20 – 34
-3x = -54
x = -54/-3
x = 18
24) 7x -8 = 41
7x = 42 + 8
7x = 49
x = 49/7
x = 7
25) 28 + 3x = 7x
3x – 7x = -28
-4x = -28
x = -28/-4
x = 7
26) 18 + 5x = 8x
5x – 8x = -18
-3x = -18
x = -18/-3
x = 6
27) 42 – 5y = 2y
-5y – 2y = -42
-7 = -42
y = -42/-7
y = 6
28) 3z + 18 = 5z
3z – 5z = -18
-2z = -18
z = -18/-2
z = 9
29) 5x + 18 = 3x + 38
5x – 3x = 38 — 18
2x = 20
x = 20/2
x = 10
30) 2y + 45 = 6y + 17
2y – 6y = 17 – 45
-4y = -28
y = -28/-4
y = 7
31) 7z – 5 = 3z + 3
7z – 3z = 3 + 5
4z = 8
z = 8/4
z = 2
32) 14z + 23= 19z – 2
14z – 19z = -2 – 23
-5z = -25
z = -25/-5
z = 5
33) 5x + 3x – 10 = 14
5x + 3x = 14 + 10
8x = 24
X = 24/8
X = 3
34) 8m + m + 4 = 49
8m + m = 49 – 4
9m = 45
m = 45/9
m = 5
35) 7a + 2a + 4 + 40
7a + 2a = 40 – 4
9a = 36
a = 36/9
a = 4
36) 15y – 9y – 2 = 10
15y – 9y = 10 + 2
6y = 12
y = 12/6
y = 2
37)-3 – 5x + 20 + 2x = 5
-5x + 2x = 5 + 3 — 20
-7x = 12
x = 12/-7
38) 9b – 3 – 5b + 13 = 22
9b – 5b = 22 + 3 – 13
-4b = 12
b = 12/-4
b = -3
39) 12 – 3x + 5 = 5x + 1
-3x — 5x = 1 – 12 – 5
-8x = -16
x = -18/-8
x = 2
40) 21a -11 = 4 + 6a
21a – 6a = 4 + 11
15a = 15
a = 15/15
a = 1
41) 16x + 10 – 21x = 35 – 10x – 5
16x – 21x + 10x = 35 – 5 – 10
5x = 20
x = 20/5
x = 4
42) 5y + 13 – 2y = 100 – 20y – 18
5y – 2y + 20y = 100 – 18 – 13
23y = 69
Y = 69/23
Y = 3
43) 7b – 9 – 8b = 23 – 15b – 18
14b = 14
b = 14/14
b = 1
44) 11a – 6 – 4a = 7a – 8 – 3a + 5
11a – 4a – 7a + 3a = -8 + 5 + 6
3a = 3
a = 3/3
a = 1
45) 27x + 3b – 18x – 39 – 6x – 24 = 0
27x – 18x – 6x = 0 – 36 + 39 + 24
3x = -99
X = -99/3
X = -33
46) 10y + 9 – 7y – 7 = 7y – 9 – 8y + 7
10y – 7y – 7y + 8y = -9 + 7 + 7 – 9
4y = -4
y = 4/4
y = 1
47) (3x + 8) + (2x — 5) = 13
3x + 8 + 2x – 5 = 13
3x + 2x = 13 – 8 + 5
5x = 10
X = 10/5
X = 2
48) (2y + 13) – (5y — 17) = 240
2y + 13 – 5y + 17 = 240
2y – 5y = 240 – 17 – 13
-3y = 210
y = 210/3
y = 70
49) 8x — (2x — 9) = 4x — (8x + 11)
8x — 2x + 9 = 4x — 8x — 11
8x — 2x — 4x + 8x = -11 — 9
10x = -20
x = — z
50) –(4z — 5) – (6 – 2z) = (5z — 8) — (4z + 5)
-4z + 5 – 6 + 2z = 5z – 8 – 4z – 5
-4z + 2z – 5z + 4z = -8 -5 – 5 + 6
-3z = -12
z = -12/-3
z = 4
51) (3y + 1) – (y — 4) = 48 – (5y + 8)
3y + 1 – y + 4 = 48 – 5y – 8
3y – y + 5y = 48 – 8 – 1 – 4
7y = 35
y = 35/7
y = 5
52) 11 – (x + 2) + (-3x + 8) = 6x – (7-5x) – 6
11 – x – 2 – 3x + 8 = 6x – 7 – 5x – 6
-x – 3x – 6x + 5x = -7 – 6 – 11 + 2 – 8
-5x = -30
x = -30/-5
x = 6
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