Question

Express x in terms of a and b:
b−7x=a−b

Answer 1

Explanation:

b - 7x = a - b....subtract b from both sides

-7x = a - b - b....combine like terms

-7x = a - 2b....divide both sides by -7

x = (a - 2b) / -7....or it could be written as x = -1/7a + 2/7b