Question

(1,7+2)×4 (6,15+3,5)×5 (5,3+1,4)×3

Answer 1

(1,7+2)*4=14,8
Действия:
1)1,7+2=  3,7;
2)3,7*4=14,8.

(6,15+3,5)*5=48,25
Действия:

1)6,15+3,5= 9,65;
2)9,65*5=48,25.

(5,3+1,4)*3=20,1
Действия:
1)5,3+1,4=6,7;
2)6,7*3=20,1

Answer 2

To solve these expressions, we'll perform the operations step by step:

1. (1,7+2) × 4: First, we perform the addition inside the parentheses: 1,7 + 2 = 3,7. Next, we multiply the result by 4: 3,7 × 4 = 14,8.

Therefore, (1,7+2) × 4 = 14,8.

2. (6,15+3,5) × 5: First, we perform the addition inside the parentheses: 6,15 + 3,5 = 9,65. Next, we multiply the result by 5: 9,65 × 5 = 48,25.

Therefore, (6,15+3,5) × 5 = 48,25.

3. (5,3+1,4) × 3: First, we perform the addition inside the parentheses: 5,3 + 1,4 = 6,7. Next, we multiply the result by 3: 6,7 × 3 = 20,1.

Therefore, (5,3+1,4) × 3 = 20,1.

So, the solutions are:

1. (1,7+2) × 4 = 14,8.
2. (6,15+3,5) × 5 = 48,25.
3. (5,3+1,4) × 3 = 20,1.