SOLUTION: by substituion..... 3x+5y=25 x-2y=10

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Question 215235: by substituion.....
3x+5y=25
x-2y=10
Answer by drj(1380) About Me  (Show Source):
You can put this solution on YOUR website!
By substituton.....

3x+5y=25
x-2y=10

The following will solve the linear system of equations by substitution...

Solved by pluggable solver: SOLVE linear system by SUBSTITUTION
Solve:
+system%28+%0D%0A++++3%5Cx+%2B+5%5Cy+=+25%2C%0D%0A++++1%5Cx+%2B+-2%5Cy+=+10+%29%0D%0A++We'll use substitution. After moving 5*y to the right, we get:
3%2Ax+=+25+-+5%2Ay, or x+=+25%2F3+-+5%2Ay%2F3. Substitute that
into another equation:
1%2A%2825%2F3+-+5%2Ay%2F3%29+%2B+-2%5Cy+=+10 and simplify: So, we know that y=-0.454545454545455. Since x+=+25%2F3+-+5%2Ay%2F3, x=9.09090909090909.

Answer: system%28+x=9.09090909090909%2C+y=-0.454545454545455+%29.



I hope the above steps were helpful.

For free Step-By-Step Videos on Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra or for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.

And good luck in your studies!

Respectfully,
Dr J