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

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 =

X = 6

The number after 6 is 7 or:

X + 1 = 6 + 1 = 7

Therefore,

X = 6 and X + 1 = 7

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