-2,6 × (6 + 5x) -1,5 = -2,1 хелп ми
-2.6*6-2.6*5x-1.5=-2.1 -15.6-2.6*5x-1.5=-2.1 -15.6-13x-1.5=-2.1 -17.1-13x=-2.1 -13x=-2.1+17.1 -13x=15 x=15/-13 x=-15/13