Solving for Variables. Need Immediate Help!

Question

Okay. I really appreciate any help. I have two problems I need help with. Solve a/b = c for b. The second is h-4/j = k solve for j. Again really appreciate it. Thank you!

Answer 1

Solving for b means getting b alone on one side of the equation. To make life easy for yourself, clear any fractions first. That involves multiplying both sides by b. b/1 times a/b cancels out the b and leaves you with a. b times c is bc. So a = bc. Divide both sides by c and get b = a/c.

In order to do for this next one what you did for the previous one, add 4/j to both sides and subtract k from both sides. Now for h - k = 4/j multiply both sides by j BUT leave the left side as j(h - k) and divide both sides by (h - k) to get j = 4/(h - k).

Answer 2

a/b=c => a/c=b

h-4/j = k

hj-4=kj

(h-k)j=4

j=4/(h-k)