Lesson 19,20,21 Review

Simplify the expression 3x-x+7x-4x

Simplify the expression 3y+7y+5y

Make sure or demonstrate that (something) is true, accurate, or justified.

Simplify the expression 12n+5n+3b-1b

Two or more expressions in different forms that always name the same value.

Which value is a solution for 15=3+x

Which value is a solution for x-5=10

Which expression is equivalent to 3(4x+1)?

A number, a variable, or a product of numbers, variables and/or expressions.

Which value is a solution for 9x=108

Simplify the expression 15f+6n+8f

$5 per hour to walk dogs. How many hours needed to earn $95? Select the equation to represent this situation.

A letter that represents an unknown number.

A number that is multiplied by a variable.

A mathematical statement that uses and equal sign (=) to show that two expressions have the same value

Simplify the expression 4j+2m+3m-2j

Putting numbers where the letters are.

A value that can be substituted for a variable to make an expression true.

Simplify the expression 7y+3-1+12y

Operations that undo each other.

Which expression is equivalent to 6(3x+5)?

Solve for the variable \frac{x}{6}=15

For any nonzero number a, the reciprocal is \frac{1}{a}

Relating to or involving algebra.

Two or more terms that have the same variable factors.

Multiplying each term in a sum or difference by a common factor does not change the value of the expression.

A group of numbers, variables, or operation symbols that represents a mathematical relationship.

A number, or the result of a calculation.

Which expression is equivalent to h+h+h+h+h?

Which expression is equivalent to 2q+4r?

Which value is a solution for x\div5=20