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

Question

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

amistre64 · Answer

multiply the top by 7

tad1 · Answer

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.