Solving Equations with Variables on Both Sides

Which is the smaller variable?

 $8x-1=3x+5$  

•  $3x$ 

•  $8x$ 

Tags

CCSS.HSA.REI.B.3

What is the "best" first step?

 $8x-1=3x+5$  

• Subtract the  $3x$  from both sides.

• Subtract the  $8x$  from both sides.

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.A.1

Which is the smaller variable?

 $2x+5=7x-3$  

•  $2x$ 

•  $7x$ 

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.A.1

What is the "best" first step?

$2x+5=7x-3$

• Subtract the $2x$ from both sides.

• Subtract the $7x$ from both sides.

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.A.1

Which is the smaller variable?

 $-8x+1=2x-9$  

•  $-8x$ 

•  $2x$ 

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.A.1

CCSS.HSA.CED.A.1

What is the "best" first step?

 $-8x+1=2x-9$  

• Add $8x$ to both sides.

• Subtract $2x$ from both sides.

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.A.1

Which is the smaller variable?

 $-5x-2=-3x+8$  

•  $-5x$ 

•  $-3x$ 

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.CED.A.1

What is the "best" first step?

 $-5x-2=-3x+8$  

• Add $5x$ to both sides.

• Add $3x$ to both sides.

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.A.1

What is the next step?

 $3x+5=14$  

• Subtract  $5$  from both sides.

• Subtract  $14$  from both sides.

Tags

CCSS.7.EE.B.4A

What is the next step?

 $9=-2x-7$  

• Add  $7$  to both sides.

• Subtract  $9$  from both sides.

Tags

CCSS.7.EE.B.4A