Solving two-step equations

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

How do you isolate a variable in a two-step equation?

Back

To isolate a variable, perform inverse operations in the reverse order of operations.

Front

What is the first step to solve the equation 33 = 4a - 7?

Back

Add 7 to both sides to get 40 = 4a.

Front

What is the second step to solve the equation 40 = 4a?

Back

Divide both sides by 4 to find a = 10.

Front

Solve the equation -5 + 6a = -59.

Back

Add 5 to both sides to get 6a = -54, then divide by 6 to find a = -9.

Front

What does it mean if an equation has no solution?

Back

It means that there is no value for the variable that can satisfy the equation.

Front

Solve the equation 26 = 5a + 1.

Back

Subtract 1 from both sides to get 25 = 5a, then divide by 5 to find a = 5.

Front

What is the solution to the equation 6 + 3a = 21?

Back

Subtract 6 from both sides to get 3a = 15, then divide by 3 to find a = 5.

Front

How do you solve the equation -3a + 8 = 14?

Back

Subtract 8 from both sides to get -3a = 6, then divide by -3 to find a = -2.

Front

What is the inverse operation of addition?

Back

The inverse operation of addition is subtraction.