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VENDETTOo3o
@VENDETTOo3o
November 2021
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помогите пж!!!!!! РАССТАВИТЬ ДЕЙСТВИЯ И РЕШИТЬ!!!!
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rakses
А) (-8.5) · 20/17 + (91/46 - 53/23) ÷ 30/23 =
= -(85·20)/(10·17) + (91/46 - 106/46) · 23/30 = -10 - 15·23/30 =
= -10 - 23/2 = -10 - 11.5 = -21.5
б) (-7/6)² · (-5/7)² · (-2.88) = 49/36 · 25/49 · (-2.88) =
= 25/36 · (-288/100) = - (25·288)/(36·100) = -8/4 = -2
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Answers & Comments
= -(85·20)/(10·17) + (91/46 - 106/46) · 23/30 = -10 - 15·23/30 =
= -10 - 23/2 = -10 - 11.5 = -21.5
б) (-7/6)² · (-5/7)² · (-2.88) = 49/36 · 25/49 · (-2.88) =
= 25/36 · (-288/100) = - (25·288)/(36·100) = -8/4 = -2