An algebra problem by El Menyo

Algebra Level pending

-1 (8+1/5-3^2 (4-1)) = ??


The answer is 18.8.

El Menyo by El Menyo , 28, Egypt

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1 solution

El Menyo
Apr 12, 2016

-1 (8+1/5-3^2 (4-1)) = -1 (8+1/5-3^2 3) = -1 (8+1/5-9 3) = -1 (8+1/5-27) = -1 (-18.8) =18.8

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You're supposed to multiply the coefficient into the bracket, not concatenate them together.

-1(8+1/5-3^2(4-1)) = -1(8.2-3^6) = -1(8.2-729) = 729-8.2 = 720.8

That there should be the correct answer

Goh Choon Aik - 5 years, 2 months ago

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