Question

7/b + 9/c = d solve for b

Answer 1

b = 7c/(dc - 9)

Explanation:

Given that:

7/b + 9/c = d

As we have to solve for b

Subtract 9/c from both sides

7/b + 9/c - 9/c = d - 9/c

7/b = d - 9/c

By taking LCM on right side

7/b = (dc-9)/c

By inverting both sides we get:

b/7 = c/ (dc - 9)

Multiplying both sides by 7 we get

b = 7c/(dc - 9)

I hope it will help you!