How do you simplify 4/(d-1)+d/(1-d)?

2 Answers
Dec 22, 2016

(d-4)/(1-d)

Explanation:

4/(d-1)+d/(1-d)

(-4)/(1-d)+d/(1-d)" " make the denominators the same

(-4+d)/(1-d)

(d-4)/(1-d)

Dec 22, 2016

(d-4)/(1-d)

Explanation:

4/(d-1)+d/(1-d)

(4(1-d)+d(d-1))/((d-1)(1-d))

((4-4d+d^2-d))/((d-1)(1-d))

((d^2-5d+4))/((d-1)(1-d))

((d-4)(d-1))/((d-1)(1-d))

(d-4)/(1-d)