Question

a) 5 x + 8 = 4 x + 10
b)6 x ÷ 2 x =20 - 80
c) 6 x - 20 = 3 x + 40
d) 8 x - 30 = 6 x +90

Answer 1

Explicação passo-a-passo:

a) 5x - 4x = -8 +10

x = 2

b) 6x ÷ 2x = 20 -80

3x = -60

x= -60/ 3

x= -20

c) 6x - 3x = + 20 + 40

3x = 60

x= 60/ 3

x= 20

d) 8x - 6x = +90 +30

2x = 120

x= 120/2

x= 60