Question

Resolva a expressão e simplifique quando possível

(-4/5). (35/16)+5/4

(10/3):(5/9)-8/7

(4-1/3):(4+1/2)

(2/5-1/4).(1/3-1):(-2-4/5)

Answer 1

(-4/5). (35/16)+5/4=
-4/5 . 35/16 = -7/4 ---simplificando em cruz (4 com 16 e 5 com 35)

-7/4 + 5/4 =- 2/4 = - 1/2
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(4-1/3):(4+1/2)=
 11/3 : 9/2 = 11/3 * 2/9 = 22/27
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(2/5-1/4).(1/3-1):(-2-4/5)
(8/20 - 5/20) . (-2/3) : (-10/5-4/5)=
3/20 . (-2/3) : (-14/5)=
- 6/60 . (-5/14)=
-1/10 . (-5/14) =
5/140 = 1/28
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(10/3) : (5/9) - 8/7=
 10/3 * 9/5 - 8/7 =
 90/15 - 8/7 = 
      6   -  8/7 =
    42/7 - 8/7 = 34/7