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 -4a + 7a = -6a + 8z + 3 for a in terms of z.
| -\(\frac{4}{9}\)z + \(\frac{4}{9}\) | |
| -\(\frac{7}{8}\)z + \(\frac{1}{4}\) | |
| \(\frac{1}{2}\)z + 1\(\frac{1}{2}\) | |
| -1\(\frac{1}{5}\)z + \(\frac{1}{10}\) |