Respuesta :

devishri1977

Answer:

Step-by-step explanation:

3(3 + x) = 15 + x

3*3 + 3x = 15 +x

9 + 3x = 15 +x

3x - x = 15 - 9

2x = 6

x = 6/2

x = 3

lilsweetprinceowyndx
The answer would be 3, since if 3(3 + x) is 18 then 15 + 3 would be 18 too.

Otras preguntas