Question

r - 7 = 20 --> r valor de la incognita ​

Answer 1

Hola¡¡¡¡

r - 7 = 20

r = 20 + 7

r = 27

Espero que te sirva :)

Valor de la incognita(r) = 27

Answer 2

r - 7 = 20

r = 20 - 7

r = 13

Eternamente axllxa