Kenneth S. answered • 03/06/16
Tutor
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Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018
let x be the "what"
then the statement (in algebra) is (x/100)•12 = 21.....Note that % is represented as ÷ by 100.
Mulltiply both sides by 100 (this is called "clearing denominator(s)" to get 12x = 2100
so x = 2100/12 = 175.
Check the answer!
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