2+2=?

im not understanding the question
answer is not 4
i tried

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)

Ana’s dachshund weighed 5 5/8 pounds when it was born . by age 4 the dog weighed 6 times as much. fill each box with a number or symbols from the list to show how to find the weight of ana’s dog at age 4 . not all numbers and symbols my be used