When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Solve 3b + 5b = 7b + 4z + 7 for b in terms of z.
| -\(\frac{1}{2}\)z - \(\frac{1}{2}\) | |
| \(\frac{1}{4}\)z - 1\(\frac{3}{4}\) | |
| -7z - 4 | |
| -1\(\frac{1}{3}\)z + \(\frac{1}{3}\) |