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 + 6a = 7a - 9z - 5 for a in terms of z.
| 1\(\frac{3}{10}\)z + \(\frac{7}{10}\) | |
| -1\(\frac{5}{6}\)z + 1 | |
| 7\(\frac{1}{2}\)z + 2\(\frac{1}{2}\) | |
| z + \(\frac{5}{8}\) |