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 -2a + 7a = -5a + 8z - 6 for a in terms of z.
| -2z - 3 | |
| \(\frac{1}{3}\)z - 2 | |
| z + 2\(\frac{1}{4}\) | |
| -\(\frac{2}{9}\)z - \(\frac{7}{9}\) |