Answer:
23
Step-by-step explanation:
400 - 8m = 216
move 8m to the other side
400 = 216 + 8m
subtract 216 from both sides
8m = 184
divide both sides by 8
m = 23
400 - 216 = 184
184/8 = 23
Check
400 - 8(23) =
400 - 184 =
216 = 216 :)
