(5+2x)\3=(x-3)\5+(x+5)\2
Общий знаменатель = 30 10 * ( 5 + 2Х ) = 6 * ( X - 3 ) + 15 * ( X + 5 ) 50 + 20X = 6X - 18 + 15X + 75 20X - 6X - 15X = 57 - 50 - X = 7 X = ( - 7 )