Algebra: solving equations with decimal coefficients
When you tutor math, decimal coefficients surface sometimes – especially in word problems. We’ll sort out a simple scenario.
Recently, someone asked me a question very similar to
206.5(0.7x) + 112x = 4000.5
Here’s what to do:
1) multiply the 206.5 by 0.7x:
144.55x + 112x = 4000.5
2) combine the like terms on the left side:
256.55x = 4000.5
3) divide both sides by 256.55 to cancel it from the left:
x=4000.5/256.55
4) we have the answer:
x=15.59345157
Hope this helps:)
Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.
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