Question

К числу x прибавили число 12,5, результат умножили на 2 и получили число, которое больше задуманного в 7 раз. Чему оно равно? пожалуйста)

Answer 1

2*(x+12,5) = 7x

2x + 25 = 7x

25 = 7x - 2x

25 = 5x | :5

5 = x

Answer 2

Объяснение:

Пусть задуманное число равно х.         ⇒

$(x+12,5)*2=7*x\\2x+25=7x\\5x=25\ |:5\\x=5.$

Ответ: задуманное число равно 5.

Answer 3

Calculating the Number

To solve the problem, we can use the following steps:

1. Add 12.5 to the number x: Let's denote the result as y, where y = x + 12.5. 2. Multiply the result by 2: After adding 12.5 to x, we get y. Then, we multiply y by 2 to get 2y. 3. Find the number that is 7 times smaller than the result: We need to find a number z such that z = 2y / 7.

Solution

Let's solve the problem step by step:

1. Add 12.5 to x: y = x + 12.5 2. Multiply the result by 2: 2y 3. Find the number that is 7 times smaller than the result: z = 2y / 7

Now, we can proceed with the calculations.