Question

1) (148-157):9 2) 2 целых 5/8 × 2 целых 2/7 + 2/15 Сразу ответ не нужен! Напишите как вы считали!

Answer 1

Я надеюсь я понятно написала

Answer 2

Sure, I'd be happy to explain how to solve these two problems step by step:

1. (148-157):9

To solve this expression, follow these steps:

Step 1: Perform the subtraction within the parentheses. 148 - 157 = -9

Step 2: Divide the result by 9. -9 ÷ 9 = -1

So, the answer is -1.

2. 2 целых 5/8 × 2 целых 2/7 + 2/15

To solve this expression, we need to perform multiplication and addition.

Step 1: Convert mixed fractions to improper fractions: 2 целых (whole number) 5/8 = (2 * 8 + 5)/8 = 21/8 2 целых (whole number) 2/7 = (2 * 7 + 2)/7 = 16/7

Step 2: Multiply the two fractions: (21/8) * (16/7) = (21 * 16) / (8 * 7) = 336 / 56

Step 3: Simplify the fraction: 336 and 56 can both be divided by 56, so divide both numerator and denominator by 56: 336 ÷ 56 = 6 56 ÷ 56 = 1

The simplified fraction is 6/1, which is equal to 6.

Step 4: Add the last fraction: 6 + 2/15

To add fractions, they must have the same denominator. The common denominator for 1 and 15 is 15. So, convert 6 to a fraction with a denominator of 15: 6 = (6 * 15) / 15 = 90/15

Now, add the fractions: 90/15 + 2/15 = (90 + 2) / 15 = 92/15

The final answer is 92/15.