Applying BODMAS, 32 - (15 x 2) + 3 = 5
90
41
It is impossible to work out 1233 + 3215. 1233 is not a valid base 3 number. Each digit in base 3 can only have a value 0, 1 or 2; it cannot have the value of 3 (the last digit of 123).
2 times 2 plus 2 times 2 plus 2 minus 2 times 2 is equal to 6.
If you mean: 2x+5+3x = 25 then the value of x works out as 4
60
5 + 20 = 25
12
It depends entirely on the value of x.
10
10
13 + 4712 = 4725