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 5a + 4a = 9a + 7z - 6 for a in terms of z.
| -\(\frac{3}{4}\)z + 1\(\frac{1}{2}\) | |
| -9z + 5 | |
| \(\frac{1}{3}\)z + 2 | |
| \(\frac{1}{4}\)z + \(\frac{1}{4}\) |