use the elimination method to solve the equations; 5u+3v=-15 2u+v=-7

Question

goformit100 · Answer

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anonymous · Answer

Regarding your problem, you'd first want to find some way to make a set of variables cancel when you add the equations together. In this case it would be easiest to multiply the entire second equation by -3 to allow the v to cancel with the 3v inthe other equation. Also it's important to remember to multiply the entire equation.

anyway, you would end up with something like this:

5u+3v=-15
-6u-3v=21

you'd add the terms just like in a regular math addition problem, like so:

-u=6 (remember that the v's cancel)

From that, u would equal -6 and now you can put u back into any of the original equations to solve for b (I would suggest using the second equation for this since v is alone in that one)