Question

calcule o valor de "x"

a)x/2=18

b)2x + 5 / 3 =3

c)3x + 8 /5 =4

d)x - 5/ 7 = 1

Answer 1

Resposta:

a)x=32

b)x=2

c)x=4

d)x=2

Explicação passo-a-passo:

x + 2=18. MMC(2,1,1) =2

2 1. 1

x+4=36

x=36-4

x=32

b)2x + 5 = 3 mmc(3,1)=3

3. 1

2x+5=9

2x=9-5

2x=4

x=4:2

X=2

c)3x+8. =4 MMC(5,1)=5

5. 1

3x+8=20

3x=20-8

3x=12

x=12:3

x=4

d) x-5= 1. mmc (7,1)= 7

7. 1

x-5=7

x=7-5

x=2