Question

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Answer 1

Resposta:

a) 2x + 3 = 19

2x = 19 - 3

2x = 16

x = 16/2

x = 8

b) 3x - 6 = 12

3x = 12 + 6

3x = 18

x = 18/2

x = 9

c) 5x + 7 = 72

5x = 72 - 7

5x = 65

x = 13

d) 4x + 15 = 95

4x = 95 - 15

4x = 80

x = 80/4

x = 20

e) 7x - 14 = 70

7x = 70 + 14

7x = 84

x = 12

f) 10x - 6 = 144

10x = 144 + 6

10x =150

x = 150/10

x = 15

g) 6x + 1 = 97

6x = 97 - 1

6x = 96

x = 96/6

x = 16

h) 4x - 5 = 135

4x = 135 + 5

4x = 140

x = 35

i) 5x + 18 = 88

5x = 88 - 18

5x = 70

x = 70/5

x = 14