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 -7a + 7a = -3a - 5z - 8 for a in terms of z.
| 1\(\frac{3}{4}\)z - 1\(\frac{1}{4}\) | |
| -2z + \(\frac{1}{2}\) | |
| 3z + 2 | |
| \(\frac{12}{13}\)z - \(\frac{5}{13}\) |