8х-15= -12+5х помогите плиз!
8x-5x=-12+15 3x= 3 x= 3:3 x=1
8х - 15 = - 12 + 5х 8х - 5х = - 12 + 15 (8 - 5) *х = 15 - 12 3х = 3 х =3:3 х = 1 ================== 8 * 1 - 15 = -12 + 5*1 8 - 15 = - 12 + 5 - (15 - 8) = - (12 - 5) - 7 = - 7