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 -8a + 2a = -9a - 5z - 7 for a in terms of z.
| \(\frac{1}{2}\)z - \(\frac{1}{10}\) | |
| -7z - 7 | |
| \(\frac{3}{4}\)z + 1 | |
| -2\(\frac{1}{4}\)z + 1\(\frac{1}{4}\) |