49 students went on a trip .There are 5 more girls than boys.How many boys are there?
b = numer of boys
g = number of girls
There are 5 more girls than boys.
g = b + 5
b + g = 49
b + b + 5 = 49
2 b + 5 = 49 Suptract 5 to both sides
2 b + 5 - 5 = 49 - 5
2 b = 44 Divide both sides by 2
2 b / 2 = 44 / 2
b = 22