Respuesta :

altavistard

Step-by-step explanation:

Let the number be x. Then x + 10 = 20.

This is all you need to write out. But, for practice, find the solution as well.

khadkasandhya55

Answer:

let the number be x

now,

x+10 =20

or,x=20-10

= x=10

Step-by-step explanation:

number = x

sum of number and ten is twenty

so, x +10=20