Question

8(12m+27)+5(31-17)=448

Answer 1

8(12m + 27)+ 5(31- 17m)= 448
96m+ 216+ 155- 85m= 448
96m- 85m= 448- 216- 155
11m=  77
m= 77: 11
m= 7
Ответ: m-= 7