(x+7)(2x+1)=7 solve by using quadratic formula

c

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:

answer: -1

step-by-step explanation:

answer: what statements

step-by-step explanation if you write the statements down then i could you.