Question

-1 4/5 •(-15); 2) -1,95-8,68; 3) -7-(-4)+3; 4) -2,16 :3/50; 5) 11/8 - 35/6.

Answer 1

Ответ:

1)42

2)-10,63

3)0

4)-36

5)−8,0208333333

Answer 2

Sure, I can help you solve these mathematical expressions step by step:

1. -1 * 4/5 * (-15): Multiply -1 by 4/5 and then multiply the result by -15: Result: 12

2. -1.95 - 8.68: Simply subtract the two numbers: Result: -10.63

3. -7 - (-4) + 3: When you subtract a negative number, it's the same as adding its positive value. So: -7 + 4 + 3 = 0

4. -2.16 / (3/50): Divide -2.16 by 3/50 (which is the same as multiplying by its reciprocal 50/3): Result: -36.00

5. 11/8 - 35/6: To subtract fractions, you need a common denominator. The least common multiple of 8 and 6 is 24.

   Convert the fractions to have a common denominator of 24:

   • (11/8) * (3/3) = 33/24
   • (35/6) * (4/4) = 140/24

   Now subtract the fractions: 33/24 - 140/24 = -107/24

So, the solutions are:

1. 12
2. -10.63
3. 0
4. -36.00
5. -107/24 (or approximately -4.4583)