Решите уравнение8(12m+27)+5(31-17m)=448
8×(12m+27)+5×(31-17m) =8*12m+8*27+5*31-5*17m=96m+216+155-85m= =11m+371 при m=7 11*7+371=77+371=448
96m+216+155-85m=448 11m+371=448 11m=448-371 11m=77 m=7