ВЫЧиСЛИТЕ: 1) (-5/12 - 3/4) / 7/3 + 16/3 * 0.75 : 2) (-2.5 - 11/6) / 13/9 - 32/9 * (-9/4); (-3.8+7/3) * (-15/8) + 25/6 / (-5/3)

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Fabman

Математика

23 декабря, 13:22

ВЫЧиСЛИТЕ: 1) (-5/12 - 3/4) / 7/3 + 16/3 * 0.75 : 2) (-2.5 - 11/6) / 13/9 - 32/9 * (-9/4); (-3.8+7/3) * (-15/8) + 25/6 / (-5/3)

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Ева Зорина · Answer 1

1) (-5/12 - 3/4) : 7/3 + 16/3 * 0,75 = (-5/12 - 9/12) * 3/7 + 12/3 = - 14/12 * 3/7 + 4 = - 7/6 * 3/7 +

+ 4 = - 1/2 + 4 = - 2/4 + 16/4 = 14/4 = 7/2 = 3,5;

2) (-2,5 - 11/6) : 13/9 - 32/9 * (-9/4) = (-15/6 - 11/6) * 9/13 - 32/1 * (-1/4) = - 26/6 * 9/13 +

+ 32/4 = - 2/2 * 3/1 + 8 = - 6/2 + 8 = - 6/2 + 16/2 = 10/2 = 5;

(-3,8 + 7/3) * (-15/8) + 25/6 : (-5/3) = (-11,4/3 + 7/3) * (-15/8) + 25/6 * (-3/5) =

= - 4,4/3 * (-15/8) + 5/2 * ( - 1/1) = - 1,1/1 * (-5/2) - 5/2 = 5,5/2 - 5/2 = 0,5/2 = 0,25.