Question

observe os exemplos e resolva
a) 2×=-8
b)3×=18
c)-3×=6
d)2×+4=6
e)-4×=-16
f)-2×=-28
g)-5x+10=-20
h)-8×-3=​

Answer 1

Explicação passo-a-passo:

3x - 7==2x+5 b ) 7x +8=-4x-10 c)4x-15= -2x +3 d)2x -4-8=4x e)3x= x +1+7 f)360+36x=30x

Answer 2

Resposta:

a) 2x = -8

x = $\frac{-8}{2}$

x = -4

b) 3x = 18

x = $\frac{18}{3}$

x = 6

c) -3x = 6

x = $\frac{6}{-3}$

x = -2

d) 2x + 4 = 6

2x = 6 - 4

2x = 2

x = $\frac{2}{2}$

x = 1

e) -4x = -16

x = $\frac{-16}{-4}$

x = 4

f) -2x = -28

x = $\frac{-28}{-2\\}$

x = 14

g) -5x + 10 = -20

-5x = -20 - 10

-5x = -30

x = $\frac{-30}{-5}$

x = 6

h) -8x-3=​

-5x