a) x = 9
b) a = 13
c) x = 71
d) m = 12
e) x = 4
f) y=5
g) x = 10
h) c = 23
i) x = 2
j) s = 15
k) x = 8
l) k = 4
a) x − 5 = 4 / + 5
x = 9
b) a - 2 = 11 / + 2
a = 13
c) 5 + x = 76 / - 5
x = 71
d) m - 4 = 8 / + 4
m = 12
e) x + 7 = 11 / - 7
x = 4
f) y + 4=9 / - 4
y=5
g) x - 2 = 8 / + 2
x = 10
h) c – 10 = 13 /+ 10
c = 23
i) x + 7 = 9 / - 7
x = 2
j) s – 9 = 6 / + 9
s = 15
k) 7 + x = 15 / - 7
x = 8
l) k + 3 = 7 / - 3
k = 4