Chapter 3 pt 1 Test Corrections

Chapter 3 pt 1 Test Corrections

Combine like terms/One-step/Two-Step

Combine Like Terms Distributive property

• Distributive Property MUST be done 1st

• The symbol to the left BELONG to the number

DISTRIBUTIVE PROPERTY

1) Multiply the number outside by EVERYTHING INSIDE

2) Ex 1= See Picture

Multiple Choice

What is the simplified version of this expression?  $5(a+6)$  

•  $5a+6$  

•  $a+30$  

•  $5a+30$  

•  $5a-30$  

Multiple Choice

What is the simplified version of this expression?  $9\left(-5x+8\right)$  

•  $45x-72$  

•  $45x+72$  

•  $-45x-72$  

•  $-45x+72$  

Multiple Choice

What is the simplified version of this expression? $-4(8r+3)$  

•  $-32r-12$  

•  $32r-12$  

•  $-32r+12$  

•  $32r+12$  

Multiple Choice

What is the simplified version of this expression?  $7\left(5x-1\right)$  

•  $35x+7$  

•  $35x-1$  

•  $35x-7$  

•  $-35x-7$  

Multiple Choice

2(c - 8)

• 2c - 16
• 2c + 16
• 2c - 8
• c - 16

Combine like terms

• They must have the same variable raised to the same exponent

• The symbol to the LEFT belongs to the NUMBER

Multiple Choice

-(8 - m)

• m - 8
• -8 - m
• 8 - m
• m + 8

Multiple Choice

Simplify:
3(9 + 2d) + 4d 

• 18d+10d
• 18d-10d
• 27+10d
• 37d

Multiple Choice

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

Multiple Choice

Simplify the Expression:

3a + 7 - 2a

• 8a

• 12a

• a + 7

• 5a + 7

One Step Equations

• Undo operation presented by do the opposite OPERATION not the opposite number

• Opposites:

• + --- (-)

• * ----- /

Multiple Choice

10 = x + 15

• x = -5

• x = 5

• x = 25

• x = -25

Multiple Choice

12 + y = -15

• y = -27

• y = 27

• y = 3

• y = -3

Multiple Choice

x - 3 = -2

• x = -5

• x = -1

• x = 5

• x = 1

Multiple Choice

h - 4 = 0

• h = 4

• h = 0

• h = -4

• h = 0

Multiple Choice

x + 8 = 3 .

• x = 11

• x= 5

• x = -5

• x = -11

Multiple Choice

X/14 = 6

• X= 84
• X = -2
• X = 78
• X = -82

Multiple Choice

7N = -49

• N= 16
• N= -7
• N= 7
• N = -8

Two-step Equations

• undo addition and subtraction 1st

• Undo multiplication and division 2nd

Multiple Choice

2k + 12 = -4

• -8
• 8
• -10
• 4

Multiple Choice

• 2
• 4
• 6
• 8

Multiple Choice

-2n + 7 = 23

• 8
• -8
• 15
• -15

Multiple Choice

6.    -3x + 5 = -13

• x = -5
• x = 2
• x = -6
• x = 6

Multiple Choice

-4x+1=21

• x=120
• x=5
• x=30
• x=-5

Multiple Choice

Figure out what n equals in this equation:
6n + 4 = -26

• n=-6
• n= -5
• n= 8
• n= -4