Question

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Answer 1

a) x + 5 = 8

x = 8 - 5

x = 3

b) x - 4 = 3

x = 3 + 4

x = 7

c) x + 6 = 5

x = 5 - 6

x = -1

d) x - 7 = - 7

x = -7 + 7

x = 0

e) x + 9 = -1

x = -1 - 9

x = -10

f) x - 39 = - 79

x = -79 + 39

x = -40

g) 10 = x + 8

10 - 8 = x

2 = x

h) 15 = x + 20

15 - 20 = x

-5 = x

i) 4 = x - 10

4 + 10 = x

14 = x

j) 7 = x + 8

7 - 8 = x

-1 = x

k) x - 1 = 5

x = 5 + 1

x = 6

l) 2x + 4 = 16

2x = 16 - 4

2x = 12

x = 12 ÷ 2

x = 6

m) 3x = 15

x = 15 ÷ 3

x = 5

n) 2x = 10

x = 10 ÷ 2

x = 5

o) 3x = -9

x = -9 ÷ 3

x = -3

p) 2x - 2 = 12 - 5x

2x + 5x = 12 + 2

7x = 14

x = 14 ÷ 7

x = 2

q) 3x - 13 = 8

3x = 8 + 13

3x = 21

x = 21 ÷ 3

x = 7

r) 4x - 9 = 23

4x = 23 + 9

4x = 32

x = 32 ÷ 4

x = 8

s) 7x - 33 = -12

7x = -12 + 33

7x = 21

x = 21 ÷ 7

x = 3

t) 33 + x = 5 - 3x

33 + x + 3x = 5

33 + 4x = 5

4x = 5 - 33

4x = 28

x = 7

u) 2x = 14

x = 14 ÷ 2

x = 7

v) 7x = 21

x = 21 ÷ 7

x = 3

w) 4x = -12

x = -12 ÷ 4

x = -3

x) 35x = -105

x = -105 ÷ 35

x = -3