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  • 01-08-2018
  • Mathematics
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What is the value of x?

What is the value of x class=

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musiclover10045
musiclover10045 musiclover10045
  • 01-08-2018

The formula to start with is (DC +CE) * CE = (AB + BE) * BE

Replace the letters with the numbers and equations:

(1 + x+4) * x+4 = (11 + x+1) * x+1

(x+5) * (x+4) = (x+12) * (x+1)

x^2 + 9x +20 = x^2 +13x +12

x^2 = x*x = 2x

11x+20 = 15x+12

20 = 4x+12

8 = 4x

x = 8/4

x = 2

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