A Little Math Trick - Cross Multiplication

in #math8 years ago

Using Cross Multiplication to Solve Algebraic Equations

I find a need to refresh the students' mind on how solve algebraic equations using a little math trick known as cross-multiplication before starting to solve trigonometry problems on unknown sides or angles of a right angled triangle.

One can use this trick to solve daily life problems such as cost of pens problem solved above.


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I love algebra! It only seems so long ago we learned this.... thanks for the refresher tips :)

Thanks for stopping by @sgnsteems.

Great trick! Forwarded it to my daughter! Upvote.