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 - 4a = 8a + 7z + 9 for a in terms of z.
| z + 4 | |
| -16z - 3 | |
| -\(\frac{11}{12}\)z - \(\frac{3}{4}\) | |
| \(\frac{2}{3}\)z + \(\frac{7}{15}\) |