Question

Решите уравнение 12(x+2) + 13(x+3)+15(x-5)=2

Answer 1

1/2x+1+1/3x+1+1/5x-1=2
(15+10+6)/30x+1=2
31/30x=2-1
31/30x=1
x=1*30/31
x=30/31