Question

(-1/5/9×2/1/7+ 1/7/12)×1/1/7​

Answer 1

Ответ:

(-1 5//9*2 1//7+1 7//12)*1 1//7=(-14//9*15//7)+1 7//12)*1 1//7=(-10//3+19//12)*1 1//7=(-1.75)*1 1//7=-1.75*8//7=-2

Пошаговое объяснение:

// черта дроби

Answer 2

Пошаговое объяснение:

(-1 5/9 × 2 1/7 +1 7/12)× 1 1/7= (-14/9 × 15/7 + 19/12) ×8/7= (-10/3 +19/12) × 8/7 = (-7/4)× 8/7 = -2

Answer 3

Let's break down the expression step by step:

1. First, simplify each fraction separately:

   -1/5 = -1/5 9/2 = 9/2 1/7 = 1/7 1/12 = 1/12 1/7 = 1/7

2. Now, perform the multiplications and additions within the parentheses:

   (-1/5/9×2/1/7+ 1/7/12) = (-1/5 * 9/2 + 1/7 * 1/12)

3. Calculate each part of the expression:

   -1/5 * 9/2 = (-9/10) 1/7 * 1/12 = 1/84

4. Add the results:

   (-9/10 + 1/84)

5. To add these fractions, you need a common denominator. The least common multiple (LCM) of 10 and 84 is 420, so let's rewrite the fractions with a common denominator:

   (-9/10 * 42/42 + 1/84 * 5/5) = (-378/420 + 5/420)

6. Now, add the fractions:

   (-378/420 + 5/420) = (-373/420)

So, the final result is -373/420.