Question

a) x - 5 = 12
b) 3 x - 8 - 17
c) 4 x = 120
d) 3 x - 2 x = 15
e) 4 x + 33 = 49
f) 6 x -3 + 4 - 2 x = - 120 + 7 ​

Answer 1

Resposta:

A)x = 17
B)x = -3
C)x = 30
D)x = 15
E)x = 4
F)x = -28,5

Explicação passo a passo:

a) x - 5 = 12

x = 12 + 5

x = 17

b) 3 x - 8 - 17

3x = 8 - 17 *

3x = -9

x = -9 / 3

x = -3

c) 4 x = 120

x = 120 / 4

x = 30

d) 3 x - 2 x = 15

1x = 15

x = 15 / 1

x = 15

e) 4 x + 33 = 49

4x = 49 - 33

4x = 16

x = 16 / 4

x = 4

f) 6 x -3 + 4 - 2 x = - 120 + 7 ​

4x  + 1  = -113

4x = -113 - 1

4x = -114

x = - 114 / 4

x = -28,5