Equations and Expressions

Tags

CCSS.6.EE.B.7

• multiplication

• divison

• addition

• subtraction

Answer explanation

We always use inverse operations to solve equations. Here we see 15x so the inverse is dividing by 15.

Tags

CCSS.HSA.REI.A.1

• multiplication first, division next

• divison first, subtraction next

• addition first, multiplication next

• subtraction first, division next

Answer explanation

First we need to subtract 4 from both sides. Then we can divide both sides by 12 to get x.

Tags

CCSS.HSA.REI.A.1

Answer explanation

33-5= 28 then

28/14 = 2 so

x=2

Tags

CCSS.7.EE.B.4A

Answer explanation

3w-w=2w

6+7=13

so our whole expression is

2w+13

Tags

CCSS.7.EE.A.1

Answer explanation

2n+3n=5n

2w-w=w

and we have +8

so our full expression is:

5n+w+8

Tags

CCSS.7.EE.A.1

• 5y+45

• 5y+45

• 25y+9

• 25y+45

Tags

CCSS.6.EE.A.3

• 33p-8

• 33p-88

• 33p+8

• 11p+88

Tags

CCSS.6.EE.A.3

• 10x + 10

• 8x + 15

• 9x+15

• 10x+15

Tags

CCSS.7.EE.A.1

Answer explanation

8(w-4)=8 is equivalent to 8w-32=8

Tags

CCSS.7.EE.B.4A