Solve for x. 8-4x=20.
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x = -3

Step-by-step explanation:

8 -4x =20

-8 from both sides

-4x = 12

divide by 4 on both sides

x=-3

your answer would be b

step-by-step explanation:

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: