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