Solve for x

Front

What does it mean to 'solve for x'?

Back

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

Front

What is the first step in solving the equation 2(4x + 7) + 8x = 50?

Back

Distribute the 2 to both terms inside the parentheses: 8x + 14 + 8x = 50.

Tags

CCSS.8.EE.C.7B

Front

How do you combine like terms in the equation 8x + 14 + 8x = 50?

Back

Combine the x terms: 16x + 14 = 50.

Tags

CCSS.7.EE.A.1

Front

What is the next step after combining like terms in the equation 16x + 14 = 50?

Back

Subtract 14 from both sides: 16x = 36.

Tags

CCSS.7.EE.B.4A

Front

How do you isolate x in the equation 16x = 36?

Back

Divide both sides by 16: x = 36/16 or x = 2.25.

Tags

CCSS.6.EE.B.7

Front

What is the solution to the equation 5x = 20?

Back

x = 4.

Tags

CCSS.6.EE.B.7

Front

What is the process to solve the equation 5x = 20?

Back

Divide both sides by 5: x = 20/5.

Tags

CCSS.6.EE.B.7

Front

What does it mean if an equation has no solution?

Back

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

Tags

CCSS.8.EE.C.7A

Front

What is a variable in mathematics?

Back

A variable is a symbol, often x or y, that represents an unknown value.

Tags

CCSS.6.EE.B.6

Front

What is the importance of checking your solution after solving an equation?

Back

Checking ensures that the value found satisfies the original equation.

Tags

CCSS.8.EE.C.7B