SOLUTION: OK so in school I have to use elimination and I need help because I don't know when I should add or subtract or anything else here is the problem
-3x- 3y= -18
6x+1y=13
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-> SOLUTION: OK so in school I have to use elimination and I need help because I don't know when I should add or subtract or anything else here is the problem
-3x- 3y= -18
6x+1y=13
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Question 1017449: OK so in school I have to use elimination and I need help because I don't know when I should add or subtract or anything else here is the problem
-3x- 3y= -18
6x+1y=13 Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! -3x- 3y= -18
6x+1y=13
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double the first one
-6x-6y=-36
6x+y=13
notice how when you add them the x terms disappear. They have been eliminated.
-5y=-23
y=4.6
6x=8.4, substituting into the second equation.
x=1.4
(1.4, 4.6)
Check by the first: -(4.2+13.8)=-18
also check by graphing.
