SOLUTION: solve system of equations using elimination 4x-9y=61 10x+3y=25

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Question 865015: solve system of equations using elimination
4x-9y=61
10x+3y=25
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
4x-9y=61
10x+3y=25


Multiply everything in equation two by 3 to get


4x-9y=61
30x+9y=75


Now add the equations


4x-9y=61
30x+9y=75
---------------
34x+0y=136


This means


34x = 136


x = 136/34


x = 4


Now use this to find y


4x-9y=61


4(4)-9y=61


16-9y=61


-9y=61-16


-9y=45


y=45/(-9)


y=-5


The solutions are x = 4, y = -5