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How to solve this

-95A+20B=40

-20A-95B=100?

Hi, you want to make one of the variables disappear, that means you need to find a multiple of either A or B so that one is negative and one is positive.

Try 4 times the 1st equation and -19 times the 2nd equation and your A's should cancel out.

Better yet, divide five out of everybody and get the following:

-19A+4B=8. (1)

-4A-19B=20.(2)

Multiply (1) by 4 and (2) by -19.

Let me know if you need more help.

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