Question

13.8 : 3 5\8 - 3 1\5 СРОЧНО!!!!!

Answer 1

13.8: 3 5/8-3 1/5= 13.8:29/8-16/5=69/5•8/29-16/5=552/145-16/5=88/145;
Ответ : 88/145

Answer 2

To solve the expression 13.8 - 3 5/8 - 3 1/5, we need to perform the subtraction step by step:

Step 1: Convert the mixed numbers to improper fractions. 3 5/8 = (8 * 3 + 5) / 8 = 29 / 8 3 1/5 = (5 * 3 + 1) / 5 = 16 / 5

Step 2: Find a common denominator for the fractions, which is 40. 29/8 = (29/8) * (5/5) = 145/40 16/5 = (16/5) * (8/8) = 128/40

Step 3: Subtract the fractions. 13.8 - 145/40 - 128/40

Step 4: Combine the whole number and fraction parts to get the final answer. 13.8 - (145/40 + 128/40) 13.8 - 273/40

Now, let's convert 13.8 to a fraction with a denominator of 40. 13.8 = 13 + 8/10 = 13 + 4/5 = 65/5 + 4/5 = 69/5

Now the expression becomes: 69/5 - 273/40

To subtract fractions, they need to have a common denominator. The common denominator here is 40.

Step 5: Find the common denominator for the fractions. 69/5 = (69/5) * (8/8) = 552/40

Now, the expression is: 552/40 - 273/40

Step 6: Subtract the fractions: 552/40 - 273/40 = (552 - 273) / 40 = 279/40

Therefore, the result of the expression is 279/40, which is an improper fraction.