Question

2 1/10 - 6 1/5 * 3/31​

Answer 1

Ответ:  1,5.

Пошаговое объяснение:

2 1/10 - 6 1/5 * 3/31= 2 1/10 - 31/5*3/31 = 2 1/10 -3/5 =2 1/10 -6/10 =

= 1 11/10-6/10 = 1 5/10 = 1 1/2 = 1,5.

Answer 2

To solve the expression:

2 1/10 - 6 1/5 * 3/31

First, convert the mixed numbers to improper fractions:

2 1/10 = 2 + 1/10 = 20/10 + 1/10 = 21/10 6 1/5 = 6 + 1/5 = 30/5 + 1/5 = 31/5

Now, the expression becomes:

(21/10) - (31/5) * (3/31)

Next, multiply the fractions:

(21/10) - (31/5) * (3/31) = (21/10) - (93/155)

Now, find a common denominator to subtract these fractions:

To find a common denominator for 10 and 155, you can use 310, which both 10 and 155 can be evenly divided into:

(21/10) - (93/155) = (21/10) * (31/31) - (93/155) * (2/2) = (651/310) - (186/310)

Now, subtract the fractions with a common denominator:

(651/310) - (186/310) = (651 - 186)/310 = 465/310

Now, simplify the fraction by dividing both the numerator and denominator by their greatest common divisor, which is 155:

(465/310) ÷ (155/155) = (3/2)

So, the result of the expression 2 1/10 - 6 1/5 * 3/31 is 3/2 or 1.5.