Mathematics Test

Subject: Mathematics Test
Find the value of the letter in the following:
X + 4 = 5 b) y + 9 =12
2) A number is multiplied by 7 and 5 is subtracted from the product, the result is 30. Find the numb.
3) What is the difference between Height and Distance?
4) Calculate the size of each angle of a regular Octagon.
Solve these questions above and send it to this Watapp number