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.

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 undo addition or subtraction, then undo multiplication or division.

Tags

CCSS.7.EE.B.4A

Front

Solve for x: 2x + 3 = 11

Back

x = 4

Tags

CCSS.7.EE.B.4A

Front

Solve for y: 5y - 7 = 18

Back

y = 5

Tags

CCSS.7.EE.B.4A

Front

What does it mean to 'solve' an equation?

Back

To solve an equation means to find the value of the variable that makes the equation true.

Tags

CCSS.7.EE.B.4A

Front

Write a two-step equation for the following scenario: A number increased by 4 equals 10.

Back

x + 4 = 10

Tags

CCSS.6.EE.B.7

Front

Solve for a: 3a - 6 = 12

Back

a = 6

Tags

CCSS.7.EE.B.4A

Front

What is the first step to solve the equation 4x + 8 = 24?

Back

Subtract 8 from both sides: 4x = 16.

Tags

CCSS.7.EE.B.4A

Front

Solve for x: 7x + 2 = 23

Back

x = 3.

Tags

CCSS.7.EE.B.4A

Front

Write an equation for the following scenario: A person has $50 and spends $10 each week. How many weeks until they have $0?

Back

50 - 10x = 0.

Tags

CCSS.HSA.CED.A.3