Question

Can someone teach me how to solve this?
3(y-2)-y=2(y+3)

Answer 1

ok (A) x² - y² = 3, (B) x + y = 2 => x = 2 - y

Substituting (B) into (A),
(2 - y)² - y² = 3
y² - 4y + 4 - y² = 3
- 4y = - 1
4y = 1
y = 1/4

Substituting back into (B), x = 2 - 1/4 = 7/4

(7/4, 1/4)

Answer 2

did this help u @Annetta_Martin

Answer 3

That actually confused me even more....

Answer 4

wattttttttttttttttttttttttttttttttt

Answer 5

omg lol

Answer 6

Multiply it out. Bring y terms to the left and constant terms to the right. Simplify and solve for y.

Answer 7

ok Rearrange equation 2 to get y=2-x
Substitute this into equation 1
x^2-(2-x)^2 = 3
x^2-(4-4x+x^2)=3
x^2-x^2+4x-4=3
4x-4=3
4x=7
x=7/4

Substitute this value of x into equation 2 to work out y
7/4 + y=2
y=2-(7/4) = 1/4

Check using equation 1
(7/4)^2-(1/4)^2=3
3.0625-0.0625=3

And there you have it ;)
x=7/4=1.75
y=1/4=0.25

Answer 8

is this better??????????????

Answer 9

hello is this better

Answer 10

realmeeee your explanation seems fine if thats confusing then you dont understnad math

Answer 11

3(y-2)-y=2(y+3)
2y-6= 2y+6

I don't even get a solution? lol

Answer 12

watttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt

Answer 13

i do understand matth

Answer 14

X_X

Answer 15

3(y-2)-y=2(y+3)
3y - 6 - y = 2y + 6
2y - 6 = 2y + 6
add 6 to both sides:
2y = 2y + 12
subtract 2y from both sides:
0 = 12 ==> inconsistent. Therefore, there no solution to this problem.

Answer 16

not you realmee im saying the person reading your explanation doesnt understand math i thought your explanation was good

Answer 17

That makes more sense, thanks @ranga

Answer 18

you are welcome.

Answer 19

wattttttttttttttttttttttttttttttttttttttttttt

Answer 20

@sweetburger Math is my weak subject, but to go around and point out people's flaws in such a manner, it just shows that you are poorly educated and lack manners. What a shame... Oh well! :)

Answer 21

that should be my medal

Answer 22

i am not well educated you are right @Anneta_Martin

Answer 23

\[3(y-2)-y=2(y+3)\] distributive property gives
\[3y-6-y=2y+6\] combine like terms on the left and get
\[2y-6=2y+6\] and then note that it is not possible for \(2y-6\) to also be equal to \(2y+6\) so there is no solution

Answer 24

@TheRealMeeeee It's a virtual medal dude... your satisfaction should be her understanding it. :P

Answer 25

hope it is clear that you cannot add 6 to a number, subtract 6 from that same number, and get an equality