A rational number is such that when u multiply it by 5/2 and add 2/3 to the product u get -7/12. What is the number?

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number = X ;;; (X * 5/2) + 2/3 = -7/12 ;;; X * 5/2 = -7 / 12 - 2/3 = [ -7 - 2 * 4 ] / 12
X * 5/2 = [ -7 -8 ] / 12 ;;; X * 5/2 = -15/12 = -5/4 ;;;; X = -5/4 * 2/5 = -1 / 2

Answers

2015-06-18T19:45:51+05:30
(5/2)x+2/3=-7/12 =>5x/2+2/3=-7/12 =>(15x+4)/6=-7/12 =>12 (15x+4)=-42 =>180x+48=-42 =>180x=-90 =>x=-90/180 So, x=-1/2
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