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 -3a + a = 7a + 8z + 4 for a in terms of z.
| -\(\frac{7}{10}\)z - \(\frac{2}{5}\) | |
| z + 1\(\frac{1}{2}\) | |
| \(\frac{7}{11}\)z - \(\frac{7}{11}\) | |
| -\(\frac{11}{12}\)z + \(\frac{7}{12}\) |