Solving Equations

What are the two basic rules for solving algebraic equations?

• Whatever you do to one side of the equal sign, you must copy and do on the other side of the equal sign

• Negative signs can be ignored

• Always start on the left side, regardless of where the variable is

• Always do the opposite operation

What do you call the number in front of a variable that is being multiplied?

• Constant

• Variable

• Coefficient

• Equation

What is the difference between an algebraic expression and an equation?

• Algebraic expressions do not have variables, but equations do have variables

• Expressions and equations are not different

• Expressions do not have an equal sign and equations need to have an equal sign

• Expressions need to have an equal sign and equations do not have an equal sign

What would the inverse operation be?
 $6+t=5$  

• addition

• subtraction

• multiplication

• division

What would the inverse operation be?
 $2s=19$  

• addition

• subtraction

• multiplication

• division

What would the inverse operation be?
 $y-9=47.8$  

• addition

• subtraction

• multiplication

• division

What would the inverse operation be?
$\frac{r}{7}=15$

• addition

• subtraction

• multiplication

• division

What is the inverse operation of

 $5+d=-8$  

What is the inverse operation of

 $21\ =\ j\ -\ 7$  

To solve the equation
x + 5 = 8
 I would ....

• subtract 5 from x
• subtract 5 from both sides
• subtract 5 from one side and add 5 to the other
• add 5 to both sides