Respuesta :
6(x+20)=168
6(20 + x) = 168 (20 * 6 + x * 6) = 168 (120 + 6x) = 168
120 + 6x = 168
120 + -120 + 6x = 168 + -120
0 + 6x = 168 + -120 6x = 168 + -120
6x = 48
x = 8
6(20 + x) = 168 (20 * 6 + x * 6) = 168 (120 + 6x) = 168
120 + 6x = 168
120 + -120 + 6x = 168 + -120
0 + 6x = 168 + -120 6x = 168 + -120
6x = 48
x = 8