Advanced Math/equations

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Question
How to solve this
-95A+20B=40
-20A-95B=100?

Answer
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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Sombra Shadow

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I can answer most questions up through Calculus and some in Number Theory and Abstract Algebra.

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I have had my Bachelor's Degree since 1987 and have been a teacher since 1988. I earned my Masters Degree in Mathematics May 2010. I have been teaching at the same community college since 2002.

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I have taught 12 years at the community college level, medical college, and technical college as well as a high school instructor and alternative education instructor and charter school instructor.

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Master's GPA 3.56 Bachelor's GPA 3.34 Post grad work not degree related GPA 4.0

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