Solve using substitution:
2x = 1 - y
5x - 10y = -10
HELP!!! Will medal and fan for solution

Question

Solve using substitution:
2x = 1 - y
5x - 10y = -10 
HELP!!! Will medal and fan for solution

anonymous · Answer

So I find it easier to flip them so they are facing the same. (Meaning have y= on one side and the rest on the other.)

2x + y = 1
5x - 10y = -10

Since they dont have an opposite quality, i need to multiply one equation to make it to where i can cancel out a number.

2x + y = 1        <-- (*10)
5x - 10y = -10

This would turn it into:

20x + 10y = 10
5x - 10y = -10

Cancel out the 10y and -10y to get:

20x = 10
5x = -10

Add them

25x = 0

x = 0

Then plug into an original equation and find y:

2x + y = 1
2(0) + y = 1
0+y=1

y = 1 and x = 0

(0,1) is your answer

anonymous · Answer

I hope that makes sense. All you have to do is make the x values or y values with a positive in one equation and a negative in the other. Then just completely cancel them both and combine the equations.

anonymous · Answer

Yes it does kind of...Thank you!!:) Now how do I medal you? ha

anonymous · Answer

Never mind I figured it out! Thanks again

anonymous · Answer

No problem! These are my favorite kind of questions so message me if you need help again!