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 6a + 3a = 8a - z - 9 for a in terms of z.
| -2\(\frac{3}{5}\)z + 1 | |
| \(\frac{5}{9}\)z + \(\frac{4}{9}\) | |
| -3\(\frac{1}{3}\)z + 2\(\frac{1}{3}\) | |
| 2z + 4\(\frac{1}{2}\) |