1/4 - 2/3 * 4/5-2/15 *-3/5

Question

1/4 - 2/3 * 4/5-2/15 *-3/5

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Answer 1

1/4 - 2/3 * 4/5-2/15 *-3/5
1/4 - 2/3=3/12-8/12=-5/12
4/5-2/15= 12/15-2/15=10-15
-5/12*10/15*(-3/5)=-1/6*1*(-1)=1/6

Comments

1 действие...1/4-2/3=-5/12

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Да

Answer 2

(1/4 - 2/3)*(4/5-2/15)*(-3/5) = 
1)НОЗ(4,3,5,15) = 60
4 - 2*2
3 - простое число
5 - простое число
15 - 3*5
НОЗ = 4*3*5 = 60
1/4 = 15/60
2/3 = 40/60
4/5 = 48/60
2/15 = 8/60
2)15/60-40/60 = -25/60
3)48/60-8/60 = 40/60
4)-25/60*40/60 = -5/18
5)-5/18*-3/5 = -1/18