Question

(2.6*0.3- дробь 2 целых 4 ре пятнадцатых: на 5 целых две третих ) :(-1.9)

Answer 1

(2.6*0.3- 2 4/15: 5 2/3) :(-1.9) 2,6*0,3=0,78 2 4/15:5 2/3=34/15*3/17=2/5=0,4 0,78-0,4=0,38 0,38:(-1,9)=-0,2

Answer 2

Let's break down the expression step by step:

2.6 * 0.3 = 0.78

To simplify the fraction, we need to find a common denominator for 4/15 and 2 4/15. The common denominator is 15. So we have:

2 4/15 = (2*15 + 4)/15 = 34/15

Therefore, the fraction becomes:

34/15 - 4/15 = 30/15 = 2

So the expression now becomes:

(0.78 - 2) / (-1.9)

= (-1.22) / (-1.9)

= 0.6421 (rounded to four decimal places)

Therefore, the final answer is approximately 0.6421.