Answer:
83
Step-by-step explanation:
82+87+83+77+70+80+88= 567
Then you divide that answer by the number of numbers you added by which is 7.
567/7= 81 so 83 was the missing number
Please take another picture i think i know the answer but i can’t see choices
36÷6 is 6 to show your work for it maybe draw it out and better show the equation like when you solve a bigger problem.