I tried but see if this helps you In algebra, it is easy to find the third value when two values are given. Generally, the algebraic expression should be any one of the forms such as addition, subtraction, multiplication and division. To find the value of x, bring the variable to the left side and bring all the remaining values to the right side.
I think it would be 8,228 I think if it is 8000 - 18+360 hopefully I am right
Area is equals length times (*) breath
L*b
10.3*9.3
=95.79l
5n + 4 = 39
5n = 39 -4
5n = 35
n = 35:5
n = 7