Asked by Unknown

Write a two-column proof.
Given: 7y=8x-14; y=6

Prove: x=7


I need help making a two-column proof with the statements and the reasons, please! Thank you! ( This is what I have so far)


Statements | Reasons

1. 7y=8x-14;y=6 | Given

2. 7(6)=8x-14 | Substitution

3. ????|????

4. ????|????

5. x=7| ????


(I just stopped at 5 for right, that's not the exact steps I think the two-column proof actually has)

Thank you again for whoever helps me! Be Blessed
Answered by Reiny
To me a two column proof is usually associated with Euclidean Geometry.

To use it here in this rather simplistic problem is like using a sledge hammer to drive in a finishing nail ...

here is what I would do
7y=8x-14; y=6

then:
42 = 8x - 14
56 = 8x
x = 56/8 = 7

There! I have proven it.

All that other stuff is just "word salad" to me.
Answered by Steve
It has to do with so-called addition property of equality and division property of equality.

Basically, if two things are equal,

adding or dividing both things by the same amount does not affect their equality.
Answered by OCA
Given - 7y=8x-14 : y=6
Substitution Property - 7(6)=8x-14
Distributive Property - 8x-14=42
Addition Property - 8x=56
Division Property - x=7
Answered by Welp
Id rather be sleeping rn but instead i have 58 overdue assignments to do kill me

Answered by Coco
Same welp same and I only have 7 days to complete them UGHHH
Answered by Yurr
dude i hate geometry algebra is way easier to cheat
Answered by Swayyy
@yurr FR I hate it so much
Answered by Helper
8x=56 is Subtraction Property of Equality
Answered by Anonymous
I find it funny this a 10th grade math question, and this was 5 years ago, the person who asked it dude/girl prob 20 by now lool
Answered by Smh
I haave 17 assignments to do bruh
Answered by elexa
@Smh frl i have this test ive been putting off for forever this sucks
Answered by bruh what the-
@Smh how tf u got 17 assignments to do???
Answered by E
I must really have nothing to do with my live because I am about a week ahead with most of my work.
Answered by bloop
I just snorted so hard now my throat hurts >< lmbo
Answered by its true *sob*
@bruh what the- one time i had like 50 overdue assignments to get done within a month of semester end it was hell
mental health problems be like :')
Answered by ( ಥ_ಥ)
this thread
Answered by Me
Die
Answered by dude
I have 93 assignments to do in 7 days i'm dying rn
Answered by Al5x1
Off topic but does that does connections academy want to be friends? I have no one to talk to or play video games with.
Answered by friend
yeah sure al5x1, i can be friends if you want
Answered by bad student
literally it’s 6:38am on wednesday and i have until the end of friday to get 19 assignments done and i only have one extension left
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