Solving two-step equations

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What is a two-step equation?

Back

A two-step equation is an algebraic equation that requires two operations to solve for the variable. It typically involves addition or subtraction followed by multiplication or division.

Tags

CCSS.7.EE.B.4A

Front

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

Back

To isolate a variable, perform the inverse operations in reverse order: first eliminate any addition or subtraction, then eliminate multiplication or division.

Tags

CCSS.7.EE.B.4A

Front

Solve the equation: 26 = 5a + 1. What is the value of a?

Back

a = 5

Tags

CCSS.7.EE.B.4A

Front

Solve the equation: 20 = 2 - a. What is the value of a?

Back

a = -18

Tags

CCSS.6.EE.B.7

Front

Solve the equation: 50 = 28.1 + 0.15a. What is the value of a?

Back

a = 146

Tags

CCSS.7.EE.B.4A

Front

Back

a = -6

Tags

CCSS.7.EE.B.4A

Front

Solve the equation: 33 = 4a - 7. What is the value of a?

Back

a = 10

Tags

CCSS.7.EE.B.4A

Front

What is the first step to solve the equation 5a + 1 = 26?

Back

Subtract 1 from both sides to get 5a = 25.

Tags

CCSS.7.EE.B.4A

Front

What is the second step to solve the equation 5a = 25?

Back

Divide both sides by 5 to find a = 5.

Tags

CCSS.6.EE.B.7

Front

What does it mean if an equation has no solution?

Back

An equation has no solution if there is no value for the variable that makes the equation true.

Tags

CCSS.8.EE.C.7A