Question

Решите уравнение8(12m+27)+5(31-17m)=448

Answer 1

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

Answer 2

96m+216+155-85m=448
11m+371=448
11m=448-371
11m=77
m=7