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 -7a + 5a = 5a + 9z - 1 for a in terms of z.
| -\(\frac{3}{8}\)z + 1\(\frac{1}{8}\) | |
| z - 3\(\frac{1}{2}\) | |
| \(\frac{7}{13}\)z - \(\frac{6}{13}\) | |
| -\(\frac{1}{3}\)z + \(\frac{1}{12}\) |