Question

La suma de un número natural y el siguiente es 13. Averigua mentalmente cuáles son estos números. Después plantea una ecuación y resuelve con ella el problema planteado

Answer 1

To find the two consecutive natural numbers that sum up to 13, we set up an equation: x + (x+1) = 13. Solving this, we find that x = 6, and the next number is x + 1 = 7. Therefore, the numbers are 6 and 7.

Step-by-step explanation:

Let's call the natural number x. According to the problem, the sum of x and the next number (x+1) is 13. To find the values of these numbers, we can set up the following equation:

x + (x + 1) = 13

Simplifying the equation, we combine like terms to get:

2x + 1 = 13

Subtract 1 from both sides:

2x = 12

Divide both sides by 2:

x = 6

Now that we have the value of x, we can find the next number:

x + 1 = 6 + 1 = 7

So the two consecutive natural numbers that sum up to 13 are 6 and 7.

Answer 2

Answer: Numbers 6 and 7

Step-by-step explanation: Suppose the number is X.

The number after X is X+1.

X + X + 1 = 13

2X + 1 = 13

2X = 13 - 1

2X = 12

X =
`(12)/(2)`

X = 6

The number after 6 is 7 or:

X + 1 = 6 + 1 = 7

Therefore,

X = 6 and X + 1 = 7