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 a + 8a = 7a - 6z - 5 for a in terms of z.
| 2\(\frac{1}{3}\)z + \(\frac{5}{6}\) | |
| z - 9 | |
| \(\frac{2}{3}\)z + 1 | |
| \(\frac{3}{16}\)z + \(\frac{1}{8}\) |