Solving Equations: Clearing Fractions

Find the least common denominator of these fractions: 

 $\frac{2}{7}\ \ \ \ \ \ \frac{2}{21}$  

• 7

• 21

• 18

• 147

Tags

CCSS.HSA.APR.D.7

To have a common denominator means two or more fractions have the same number on the ___________ of the fraction line.

• top

• bottom

Tags

CCSS.4.NF.A.2

What is the least common denominator of 1/9 and 2/3?

• 6
• 3
• 9
• 21

Tags

CCSS.4.NF.A.2

What do you multiply each term of an equation by to clear fractions?

• The greatest common factor
• The least common denominator
• whatever number you want
• zero

Tags

CCSS.HSA.APR.D.6

CCSS.HSA.APR.D.7

CCSS.HSA.REI.A.2

Solve the equation by first clearing fractions:

$$\frac{1}{8}x+\frac{1}{4}=\frac{5}{8}$$

• x = 1/8

• x = 4

• x = 3

• solution not listed

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.3

Solve for c by clearing the fractions.

• 1/3

• 2/3

• 1

• 2

Tags

CCSS.8.EE.C.7B

What is the first step to solve this equation?

• Move all the variables to one side.

• Move all the constants to one side.

• Find the least common denominator.

• Plug in a number for X.

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

What should you do next after finding the LCD?

• Move all the constants to one side.

• Move all the variables to one side.

• Multiply the LCD to all the variables

• Multiply the LCD to every term of the equation.

Tags

CCSS.HSA.REI.A.2

When solving this equation by clearing the fractions, what number would you multiply each term in the equation by?

 $\frac{2}{3}a+\frac{1}{4}a-8=7$  

• 3

• 4

• 12

• 15

Tags

CCSS.HSA.APR.D.7

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

Solve this equation by clearing the fraction.

• x = -18

• x = 66

• x = 5

• x = -3

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.3