Question

15: (3 12 /17 + 2 5/17)+ (4,2- 2 3/5):4

Answer 1

3 12 /17 + 2 5/17= 6
15:6=2,5
4,2-2 3/5=4,2-2,6=1,6
1,6:4=0,4
2,5+0,4=2,9

Answer 2

15:(3 12/17+2 5/17)+(4,2-2 3/5):4=
15:6+(4,2-2,6):4=5/2+1,6:4=
2,5+0,4=2,9

Answer 3

To solve this expression, let's break it down step by step:

Step 1: Add the two fractions inside the parentheses. (3 12/17 + 2 5/17) = (3 + 2) + (12/17 + 5/17) = 5 + 17/17 = 5 + 1 = 6

Step 2: Subtract the two mixed numbers inside the other set of parentheses. (4 2/5 - 2 3/5) = (4 - 2) + (2/5 - 3/5) = 2 - 1/5 = 1 4/5

Step 3: Divide the result from Step 2 by 4. (1 4/5) / 4 = 1/4 + 4/5 ÷ 4 = 1/4 + (4/5) * (1/4) = 1/4 + 1/5 = (5 + 4) / 20 = 9/20

Step 4: Add the results from Step 1 and Step 3. 6 + 9/20 = 6 9/20

So, the final result is 6 9/20.