Solving two-step equations (basic)

Front

What is a two-step equation?

Back

A two-step equation is an algebraic equation that requires two operations to solve for the variable.

Front

What is the first step to solve the equation 4x + 7 = 23?

Back

Subtract 7 from both sides to isolate the term with the variable.

Front

What is the second step to solve the equation 4x + 7 = 23 after isolating the term?

Back

Divide both sides by 4 to solve for x.

Front

Back

x = 4

Front

What does it mean to isolate a variable in an equation?

Back

Isolating a variable means to manipulate the equation so that the variable is on one side by itself.

Front

Back

Multiply both sides by 2 to eliminate the fraction.

Front

Back

x = 21

Front

Back

Multiply both sides by 3 to eliminate the fraction.

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Back

x = 10

Front

Back

Add 12 to both sides to isolate the term with the variable.