Subtract.
(66 + 6) – (b+4)
Enter your answer, in simplified form, in the box

68-b

Step-by-step explanation:

(66+6)-(b+4)

72-b-4

72-4-b

68-b

hbfhv.hjgfskhgfdbmx n

step-by-step explanation:

9-15%

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: