Question

resolva as seguintes expressões a)3x-5=x+19 b)3x-2x=2x+18 c)5x7x=100+2x d)5+x+2(3x+4)=24​

Answer 1

Resposta:

a) 12

b( 18

c) 1/7

Explicação passo-a-passo:

3x-5=x+19

3x-x=5+19

2x=24

x=12

b( 3x-2x=2x+18

3-2-2=18

3-4=18

x=18/1

x= 18

c) 5x+7x=100+2x

5+7-2=100

12-2=100

10x=100

x=100/10

x=10

d)

5+x+2(3x+4)=24

5+x+6x+8=24

x+6x=24-5-18

7x=24-23

x=1/7