Unit 3A Test (Pre-Algebra)

Front

What is the first step to solve the equation: 11 - 3x = 44?

Back

Subtract 11 from both sides.

Front

Translate this sentence: four more than twice a number is eighteen.

Back

2n + 4 = 18.

Front

Solve for x: -6x = 30.

Back

x = -5.

Front

Solve: 3(x − 2) = 3x − 6.

Back

Infinitely many solutions.

Front

Back

Front

What is the definition of a variable in algebra?

Back

A symbol, often a letter, that represents a number in mathematical expressions or equations.

Front

What does it mean to isolate a variable?

Back

To manipulate an equation to get the variable on one side and all other terms on the other side.

Front

What is the distributive property?

Back

a(b + c) = ab + ac, meaning you multiply a term by each term inside the parentheses.

Front

What is an equation?

Back

A mathematical statement that asserts the equality of two expressions.

Front

What is the solution to an equation?

Back

The value(s) of the variable that make the equation true.