Find value of each expression in lowest terms

7/18 + 3/5

first you find a common denominator (I chose 90 because 18 * 5 = 90)

then you have to do the same thing what you did to the numerator so you would do 7*5=35 and 3*18=54

so it would be

35/90 + 54/90 = 89/90

and then you can't simplify it so the

answer is 89/90