SOLUTION: Find the solution set for one of the following systems of equations, try to use the elimination method:
1) -7y + 2x = 15 and 4y - 2x = -9
Algebra.Com
Question 741117: Find the solution set for one of the following systems of equations, try to use the elimination method:
1) -7y + 2x = 15 and 4y - 2x = -9
Answer by only4christ2(12) (Show Source): You can put this solution on YOUR website!
-7y + 2x = 15
4y - 2x = -9
_______________ add these as they are and the x's cancel out; you get:
-3y = 6
y = -2
Substitute this back into either of the equation to find x:
Using the first one:
-7y + 2x = 15 becomes
-7(-2) + 2x = 15
14 + 2x = 15
2x = 1
x = 1/2
RELATED QUESTIONS
Solve the equations by using elimination method and Use determinants to solve systems of... (answered by Theo)
solve the following system bu substitution
x=7y+9
x=7/4y
what is the solution set?
(answered by solver91311,JBarnum)
Use
a. the determinant method.
b. the elimination method to solve the following... (answered by ikleyn)
Use the Gauss-Jordan elimination method to solve the system of equations:
-2x - 7y = -5
(answered by ewatrrr)
1. Solve the following set of equations by using Gauss Elimination Method.... (answered by Edwin McCravy)
Using the addition (elimination) method to solve systems of equations .
6x-4y=11... (answered by vleith)
Find the ordered pair solution to the following system of equations (Use any method):... (answered by solver91311)
Solve the following systems of equations using the addition (elimination) method.
What (answered by ewatrrr)
please i have a problem with the following equation and don't know how to go about it and (answered by ewatrrr)