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Mathematics 38 Online
OpenStudy (anonymous):

Can someone help me with the elimination method? 2x + 10 y = 58 -14x +8y = 140

OpenStudy (amistre64):

multiply the top by 7

OpenStudy (tad1):

Multiply the top equation by 7 so it becomes 14x + 70y =406. Then add the two equations together by combining like terms. The x terms will disappear or be eliminated. And you will have one equation with y as the only variable. solve this equation for y. Then substitute the result back into one of the original equations to find x. It's always a good idea to check your answer in the other equation.

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