Question

2целых 7/20-2,38-1,4

Answer 1

2$\frac{7}{20}$ - 2,38 - 1,4 = 2.35 - 2,38 - 1,4 = -1,43

1) 2$\frac{7}{20}$ = $\frac{27}{20}$ = 2.35

2) 2.35 - 2,38 - 1,4 = -1,43

Answer 2

2.35-2.38-1.4= -1.43

Answer 3

To solve the expression, let's perform the operations step by step:

1. Start with 2 whole units: 2
2. Add the fraction 7/20 to it: 2 + 7/20
3. Subtract 2.38: 2 + 7/20 - 2.38
4. Finally, subtract 1.4: 2 + 7/20 - 2.38 - 1.4

To simplify the expression, we'll convert the mixed number (2 + 7/20) into an improper fraction:

2 + 7/20 = (2 * 20 + 7) / 20 = 47/20

Now the expression becomes:

47/20 - 2.38 - 1.4

To subtract the decimal numbers, we need to have them with the same number of decimal places. So, let's convert 2.38 into a fraction:

2.38 = 238/100

Now the expression becomes:

47/20 - 238/100 - 1.4

To combine the fractions, we'll find a common denominator:

The least common multiple of 20 and 100 is 100, so we'll rewrite the fractions:

47/20 - (238 * 5)/(100 * 5) - 1.4

Now the expression becomes:

47/20 - 1190/100 - 1.4

Now that the fractions have the same denominator, we can combine them:

47/20 - 1190/100 = (47 * 5)/(20 * 5) - 1190/100 = 235/100 - 1190/100 = (235 - 1190)/100 = -955/100

The expression now becomes:

-955/100 - 1.4

To subtract these fractions, we once again find a common denominator:

The least common multiple of 100 and 10 is 100, so we'll rewrite the fractions:

-955/100 - (1.4 * 10)/(10 * 10) = -955/100 - 14/10

Now, we need to convert 14/10 into a fraction with a denominator of 100:

14/10 = (14 * 10)/(10 * 10) = 140/100

The expression becomes:

-955/100 - 140/100

Now we can combine the fractions:

(-955 - 140)/100 = -1095/100

So, the final result is -1095/100, which can be simplified to -10.95.

Therefore, 2 целых 7/20 - 2.38 - 1.4 equals -10.95.