Question

a)2x+3=11
b)4x+12=48
c)3x+3=48
d)40+x=30+3x
e)4x+60-2x=80​

Answer 1

Resposta:

a) x = 4

b) x = 9

c) x = 15

d) x = 5

e) x = 10

Explicação passo-a-passo:

a) 2x + 3 = 11

2x = 11 - 3

2x = 8

x = 8 : 2

x = 4

b) 4x + 12 = 48

4x = 48 - 12

4x = 36

x = 36 : 4

x = 9

c) 3x + 3 = 48

3x = 48 - 3

3x = 45

x = 45 : 3

x = 15

d) 40 + x = 30 + 3x

x - 3x = 30 - 40

-2x = -10

x = -10 : -2

x = 5

e) 4x + 60 - 2x = 80

4x - 2x = 80 - 60

2x = 20

x = 20 : 2

x = 10