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6.6 Quiz Review
Like Terms and Equations
| Term | Definition |
|---|---|
| variable | a number represented by a letter- can change |
| Coefficient | number in front of a variable- being multiplied |
| constant | A value that does not change- the number |
| like terms | Expressions that contain the same variables to the same exponent |
| combine like terms | add or subtract the coefficients of the variables |
| inverse operations | operations that undo each other (opposites) |
| isolate the variable | To get a variable alone on one side of the equation in order to solve the equation. |
| Solve 1-step Equation | do the OPPOSITE (inverse) operation to both sides to ISOLATE the variable (x) |
| Inverse/Opposite of addition | subtraction |
| Inverse/opposite of subtraction | addition |
| The inverse/opposite of multiplication | division |
| The inverse/opposite of division | multiplication |
| Check an equation | 1. Rewrite the original equation 2. substitute in the value of the variable (x) 3. solve each side and see if they are equal x = 15 2x = 30 2(15) = 30 30 = 30 |