Question

a)
$21x - 17 = 109$
b)
$73x + 100 = 53x$
c)
$23x - 22 = 19x + 6$
d)
$8x - 12 = - 3$
e)
$6x + 9 = - 7$
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Answer 1

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~~~ Resposta:

A)

21x - 17 = 109

21x = 109 + 17

21x = 126

x = 126/21

x = 6

B)

73x + 100 = 53x

73x - 53x = 100

20x = 100

x = 100/20

x = 5

C)

23x - 22 = 19x + 6

23x - 19x = 6 + 22

4x = 28

x = 28/4

x = 7

D)

8x - 12 = -3

8x = -3 + 12

8x = 9

x = 9/8

x = 1,125

E)

6x + 9 = -7

6x = -7 - 9

6x = -16

x = -16/6

~~~ Espero ter ajudado, bom estudo! ♡