Question

(2,17+4,45):(12,6-12,5)= (14,3-4,3)•(12,9+7,5)=

Answer 1

Ответ:

первый-66,2

второй-204

Answer 2

1)2,17+4,45=6,72
2) 12,6-12,5=1
3)6,72:1=6,720 вроде

Answer 3

Let's break down the expression step by step:

1. (2.17 + 4.45) : (12.6 - 12.5) First, we perform the addition and subtraction within the parentheses: 2.17 + 4.45 = 6.62 12.6 - 12.5 = 0.1

   Now, we can divide the result of the addition by the result of the subtraction: 6.62 / 0.1 = 66.2

2. (14.3 - 4.3) • (12.9 + 7.5) Again, we perform the addition and subtraction within the parentheses: 14.3 - 4.3 = 10 12.9 + 7.5 = 20.4

   Now, we can multiply the result of the subtraction by the result of the addition: 10 * 20.4 = 204

So, the final result is 204.

Answer 4

Let's break down the expression step by step:

1. (2.17 + 4.45) / (12.6 - 12.5): First, we calculate the numerator: 2.17 + 4.45 = 6.62. Then, we calculate the denominator: 12.6 - 12.5 = 0.1. Now, we can perform the division: 6.62 / 0.1 = 66.2.

2. (14.3 - 4.3) * (12.9 + 7.5): First, we calculate the subtraction in the parentheses: 14.3 - 4.3 = 10.0. Then, we calculate the addition in the other set of parentheses: 12.9 + 7.5 = 20.4. Finally, we multiply the two results: 10.0 * 20.4 = 204.0.

So, the result of the given expression is:

66.2 / 204.0 = 0.3245 (rounded to four decimal places).