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9/23 algebraic proofs

Last updated almost 2 years ago

8 questions

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Question 1

1.

match the proof reason to the correct step.

Draggable item		Corresponding Item
3x + 4 = 16		given
3x = 12		subtraction
x = 4		division

Question 2

2.

Match the proof reason to the correct step.

Draggable item		Corresponding Item
4x-3=7x-24		given

Question 3

3.

match the proof reasons to the correct step.

Draggable item		Corresponding Item
+4(2x+1) = 28		given
8x = 24		distributive

Question 4

4.

match the proof reason to the correct step.

Draggable item		Corresponding Item
x = 10		given
3x-2=28		addition
3x = 30		division

Question 5

5.

match the proof reason to the correct step.

Draggable item		Corresponding Item
-3x = -15		given
x = 5		subtraction

Question 6

6.

match the proof reason to the correct step.

Draggable item		Corresponding Item
4(5x+2)=15x+48		given

Question 7

7.

Match the proof reason to the correct step.

Draggable item		Corresponding Item
5=2y-3		given

Question 8

8.

match the proof reason to the correct step.

Draggable item		Corresponding Item
6x+10=4(3x-8)		given

x=7

subtraction

21=3x

addition

-3=3x-24

division

7=x

symmetric

x = 3

subtraction

8x + 4 = 28

division

2x+3=5x-12

subtraction

2x=5x-15

division

20x=15x40

distributive

5x=40

subtraction

20x+8=15x+48

subtraction

x=8

division

8=2y

subtraction

10y+5=12y-3

addition

4=y

division

y=4

symmetric

6x+10=12x-32

distribution

-6x+10=-32

subtraction

-6x=-42

subtraction

x=7

division