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Addition Equations
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Division Equations
Substitution Equations
100
16 + m = 44
m = 28
100
s - 13 = 52
s = 65
100
91 = 7h
h = 13
100
15 = c ÷ 7
c = 105
100
10 + a = n x 2; for a = 12
n = 11
200
x + 17 = 38
x = 21
200
w - 8 = 63
w = 71
200
143 = 13 x k
k = 11
200
p ÷ 3 = 69
p = 207
200
3g = r + 29; for r = 7
g = 12
300
23 = y + 8
y = 15
300
33 = t - 16
t = 49
300
6m = 78
m = 13
300
9 = d ÷ 5
d = 45
300
j ÷ 4 = 2d; for j = 16
d = 2
400
38 = d + (5 x 3)
d = 23
400
75 = a - 25
a = 100
400
128 = 8 x d
d = 16
400
w ÷ 6 = 9
w = 54
400
6 x d = p + 180; for d = 100
p = 420
500
w + 77 = 108
w = 31
500
z - (4² x 2) = 50
z = 82
500
91 = 5n + 6
n = 17
500
(10 + 7) = r ÷ 9
r = 153
500
k ÷ 3 = m - 7; for k = 30
m = 17