Question

Cat fac (-3/8+1/4+1/2):(2/3-3/6)?

(3/10:2/10) la puterea a doua - 1/2?

4/5-1,2×5/6?

(1/2) la puterea a doua - 1/25×2,5 ?

Va mulțumesc anticipat!

Answer 1

Răspuns:

Explicație pas cu pas:

(-3/8 + 1/4 + 1/2) : (2/3 - 3/6) = (-3/8 + 2/8 + 4/8) : (4/6 - 3/6) =

= 3/8 : 1/6 = 3/8 x 6 = 18/8 = 9/4

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(3/10 : 2/10)^2 - 1/2 = (3/10 x 10/2)^2 - 1/2 = (3/2)^2 - 1/2 = 9/4 - 2/4 = 7/4

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4/5 - 1,2 x 5/6 = 4/5 - 12/10 x 5/6 = 4/5 - 1 = 4/5 - 5/5 = -1/5

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(1/2)^2 - 1/25 x 2,5 = 1/4 - 1/25 x 25/10 = 1/4 - 1/10 = 5/20 - 2/20 = 3/20