8th gr expressions & equations Flashcards
How do you know if terms are alike?
They have the same variable
How do you combine like terms?
You combine like terms by adding or subtracting the coefficients.
What is a coefficient?
A coefficient is the number that is with the variable.
What are the 2 sets of inverse operations?
The inverse operation sets are adding/ subtracting and multiplying/ dividing.
How do you know if there is one solution to an equation?
You know there is one solution if you are left with x = a number and the coefficients don’t cancel out. THE COEFFICIENTS ARE DIFFERENT
When solving equations what is always the first step?
The first step to solving an equation is always adding or subtracting. The variable is for last.
When solving equations you do the inverse operation. What does inverse mean?
Inverse operations are opposite operations. +- and X÷
A letter next to a number means what kind of math?
A letter next to a number means multiplication.
When you see parentheses that means to use the distributive property which means what kind of math?
Parentheses and the distributive property mean multiplication.
How do you know if there are no solutions to an equation?
THE COEFFICIENTS ARE THE SAME AND THE OTHER NUMBERS ARE DIFFERENT
How do you know if there are an infinite number of solutions to an equation?
THE COEFFICIENTS ARE THE SAME AND THE OTHER NUMBERS ARE THE SAME
When solving an equation you always leave the variable for…
When solving an equation you always leave the variable for last.
