Help 15×(c-8x)=75,при с =53 (6х-d)×8=104,при d=29
15*(53-8x)=75 (6x-29)*8=104 795-120x=75 48x-232=104 -120x=75-795 48x=104+232 120x=720 48x=336 x=720:120 x=336:48 x=6 x=