Let...x be the number of boysx + 26 be the number of girls
Getting the number of boys.
Now, let's get the number of girls by substituting.
there are 195 girls
the equation is: 364= 2x+26
subtract 26 from both sides and you get 338
338 divided by 2 is 169, therefore there are 169 boys.
169+26 more girls is 195