-10,125 * 3 1/3 + ( - 8,75) * 2 4/7 Решите по действиям. Created by Alina4564. matematika-ru

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-10,125 * 3 1/3 + ( - 8,75) * 2 4/7
Решите по действиям

Svetl121

Verified answer

-10,125*3 1\3+(-8,75)*2 4\7=-135\4+(-45\2)=-225\4=-56,25
1)-10,125=-10 1\8 =-81\8 2)-8,75*2 4\7=-8 3\4*2 4\7=-35*18=-45\2
3 1\3=10\3 4*7
-81*10=-135\4
8*3
Ответ:-56,25.

1 votes Thanks 0

Юленька194

Verified answer

-10,125 * 3 1/3 + ( - 8,75) * 2 4/7=

1) -10,125 * 3 1/3 = -10 1/8 * 10/3 = - 81/8 * 10/3 = -(81*10)/(8*3)= -(27*5)/4 = -135/4
2) ( - 8,75) * 2 4/7 = -8 3/4 * 18/7 = - 35/4*18/7 = - (5*18)/4= -90/4
3) -135/4-90/4= -225/4 = -56,25

1 votes Thanks 1

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