1/2 w + 5 = 12
Subtract 5 from each side: 1/2 w = 7
Multiply each side by 2 : w = 14
I don't know what you are talking about please re word the question its really hard to understand what your asking.
7.6*10^3+2.3*10^5=7600+230000= 237600.
There are 237600 people living in Brooklyn and Staten Island.