SOLUTION: -4x - 3y = -14 and -x + 3y = -11

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Question 1180166: -4x - 3y = -14 and -x + 3y = -11
Found 4 solutions by mananth, MathTherapy, josgarithmetic, ikleyn:
Answer by mananth(16946)   (Show Source): You can put this solution on YOUR website!
-4 x + -3 y = -14


-1 x + 3 y = -11
Eliminate y
multiply (1)by 1
Multiply (2) by 1
-4 x -3 y = -14
-1 x 3 y = -11
Add the two equations
-5 x = -25
/ -5
x = 5
plug value of x in (1)
-4 x + -3 y = -14
-20 + -3 y = -14
-3 y = 6
y = -2
Ans x = 5
y = -2

Answer by MathTherapy(10553)   (Show Source): You can put this solution on YOUR website!

-4x - 3y = -14 and -x + 3y = -11
No question posed!

What purpose on this EARTH does multiplying 2 equations by 1 serve the person who did this problem?

This must be something NEW and RIDICULOUS! My 8 year-old would laugh in his/her face if he saw a RIDICULOUS move as this! 

Answer by josgarithmetic(39620)   (Show Source): You can put this solution on YOUR website!
 
-4x - 3y = -14      

        +

-x + 3y = -11























 

Answer by ikleyn(52808)   (Show Source): You can put this solution on YOUR website!
 .





        See how simple it is . . . 








Add the two equations (both sides).


Doing this way, you eliminate "y" and get


    -5x = - 25,  or   x = 5.


Then from the second equation


    3y = -11 + x = -11 + 5 = -6.

     y                     = -6/3 = -2.

ANSWER.  x= 5;  y= -2.





Solved.







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