Question

a)
$3x + 5 = 8$

b)
$10x - 19 = 21$

c)
$2x - 7 = - 10$

d)
$0.5x + 2.6 = 5.1$
e)
$5x - 27 = - 4x$
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Answer 1

Resposta:

a) 3x+5=8

3x= 8-5

3x= 3

x=3/3

x=1

b) 10x-19=21

10x= 21+19

10x= 40

x=40/10

x= 4

c) 2x-7= -10

2x= -10+7

2x= -3

x= -3/2

d) 0,5x+2,6=5,1

0,5x= 5,1-2,6

0,5x= 2,5

x= 2,5/0,5

x= 5

e) 5x-27= -4x

5x+4x= 27

9x= 27

x= 27/9

x= 3