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 - 8a = 5a + 3z - 7 for a in terms of z.
| -\(\frac{2}{7}\)z + \(\frac{6}{7}\) | |
| -1\(\frac{1}{5}\)z - 1\(\frac{1}{5}\) | |
| -\(\frac{1}{2}\)z + \(\frac{1}{2}\) | |
| -\(\frac{11}{13}\)z + \(\frac{7}{13}\) |