Question

B) 2x+20-12=24-x C) x-7+4x=5+12 D) x-3=10-x+12-x E) 4x+10-2=45-3x+2x F) 2x+21=15-×-2x

Answer 1

Resposta:

b)8

c)21

d)8,33...

e)7,4

f)1,2

Explicação passo-a-passo:

b) 2x+20-12=24

2x=24+12-20

2x=36-20

2x=16

x=16/2

x=8

c) x-7+4=5+12

x=12+5-4+7

x=25-4

x=21

d)x-3=10-x+12-x

3x=10+12+3

3x=25

x=25/3

x=8,33...

e)4x+10-2=45-3x+2x

4x+3x-2x=-10+2+45

5x=37

x=7,4

f)2x+21=15-x-2x

5x=15-21

5x=-6

x= -1,2

espero ter ajudado

Answer 2

Resposta: Bom dia !!!

b) 2x = 24 - 20 + 12

b) 2x = 16

b) x = $\frac{16}{2}$

b) x = 8

c) x + 4x = 12 + 5 + 7

c) 5x = 24

c) x = $\frac{24}{5}$

c) x = 4,8

d) x + x + x = 10 + 12 + 3

d) 3x = 25

d) x = $\frac{25}{3}$

d) x = 8,333...

e) 4x + 3x - 2x = 45 - 10 + 2

e) 5x = 37

e) x = $\frac{37}{5}$

e) x = 7,4

f) 2x + 2x + x = 15 - 21

f) 5x = -6

f) x = $\frac{-6}{5}$

Explicação passo-a-passo: espero ter ajudado :-)

melhor resposta me ajuda