5x-7>x+8x -4-8(6x-7)≤4 x^2-8x>0 плез хотяб одно
5x - 7 > x + 8x 5x - 9x > 7 - 4x > 7 x < - 7/4 -4-8(6x-7)≤4 -4-48x+56≤4 52-48x≤4 -48x≤4-52 -48x ≤ -48 x ≤ 1