SOLUTION: hi I would like to know if I solved this equation correctly: 3x+y=25 where x-y=7 what is the value of y. This is how I answered; y=7-x 3x+ (7-x)=25 2x+7=25 2x+7=

Question 503111: hi
I would like to know if I solved this equation correctly:
3x+y=25 where x-y=7 what is the value of y.
This is how I answered;
y=7-x
3x+ (7-x)=25
2x+7=25
2x+7=25
2x=18
x=9
y=7-9
y=-2
(x,y)= (9,-2)

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
hi
I would like to know if I solved this equation correctly:
3x+y=25 where x-y=7 what is the value of y.
This is how I answered;
y=7-x
3x+ (7-x)=25
2x+7=25
2x+7=25
2x=18
x=9
y=7-9
y=-2
(x,y)= (9,-2)
---------------
You don't need to ask, just sub your answer into the equations.
----------
3x+y=25
3*9 - 2 = 25 That works.
-------------
x-y=7
9 - (-2) = 7
11 = 7 uhoh. It's not correct.
RELATED QUESTIONS
Our teacher put this on our assignment, I have never seen a problem like this,"William... (answered by richwmiller)

Hi I am trying to set up a problem involving the production of bouquets and wreaths.... (answered by ankor@dixie-net.com)

Hi I have a couple of problems that I would like to know how to solve. The involve the... (answered by checkley71)

Hi, I am doing a question in a assignment where I have to transform the equation to... (answered by ewatrrr)

y=-2/3x-4 i would like to know how to graph this linear... (answered by jim_thompson5910)

Please tell me if I have solved this problem correctly. What is the value of y-x when y= (answered by solver91311,Alan3354)

Hi, I know I could get one question like this if someone could explain it to me - Three... (answered by wodkit02)

Please help me with this problem: How do I put the following in standard form??... (answered by jim_thompson5910)

Hi, I will like to know if this is the answer for this Linear Equation: -2x-y=-9... (answered by josmiceli)