Question

Dou 5 estrelas pra quem me ajudar…Com cálculos!

Answer 1

Resposta:

a)x=2        b) x=1,75     c) x=6,333...      d) 4,125

Explicação passo a passo:

A)

9/X=18/4

18X=36

X=36/18

X=2

B)

18/15=3X+1/5X-2

18.(3X+1) = 15.(5X-2)

54X+18 = 75X-30

54X-75X= 30-18

-21X=12

X=12/21

X=1,75

C)

X-5/X+1=6/24

6.(X+1)=24.(X-5)

6X+6=24X-120

6X-24X=120-6

-18X=114

X=114/18

X=6,333...

D)

8/2X-6=12/X-1

8.(X-1)=12.(2X-6)

8X+8=24X-74

8X-24X=74-8

-16X-66

X=66/16

X=4,125