Question 793707: Can someone help me solve this?
Solve the system by the elimination method.
5x-y=-14+2x+y
7x+9y+4=3x+8y
Found 2 solutions by simplemathlover, MathTherapy:
Answer by simplemathlover(3)   (Show Source):
You can put this solution on YOUR website! Solve the system by the elimination method.
5x-y=-14+2x+y
7x+9y+4=3x+8y
solve eq.1
eq.1 5x-y=-14+2x+y
first combine the similar terms
5x-2x-y+y=-14
then proceed to cancellation of like terms:
5x-2x-y+y=-14
3x =-14
solve eq.2
eq.2 7x+9y+4=3x+8y
first combine the similar terms:
7x-3x+9y-8y=-4
then proceed to cancellation of like terms:
4x+y=-4
combine the answer in eq.1 and 2
by elimination method we have:
3x =-14 (minus) 4x+y=-4
the answer is: -x+y=-10
multiplying both side by -1 we have
-1(-x+y=-10)-1
final answer: x-y=10
Answer by MathTherapy(10556)  (Show Source):
You can put this solution on YOUR website!
Can someone help me solve this?
Solve the system by the elimination method.
5x-y=-14+2x+y
7x+9y+4=3x+8y
Combine like terms in eq (i) to get: 3x - 2y = - 14 ------ eq (i)
Combine like terms in eq (ii) to get: 4x + y = - 4 ------ eq (ii)
Solve the system to get:  and 
Then do a check!!
Send comments, “thank-yous,” and inquiries to “D” at MathMadEzy@aol.com. Further help is available, online or in-person, for a fee, obviously.
For FREE info and answers to questions about the ASVAB exam, the NYS 3 – 8 city/state wide exams, GENERAL MATH QUESTIONS, or MATH QUESTIONS related to the Regents Integrated Algebra, Regents Geometry, Regents Algebra 2/Trigonometry, SHSAT, COOP/HSPT/TACHS, PSAT, SAT, ACT, SSAT/ISEE, GRE, CLEP, and the GED, you can visit: http://asvabstudyzone.freeforums.net/.
|
|
|
