If the denominator of two fractions are both the same just add or subtract the numerator , it depends on the sign .. however if its not the same, get the product of denominator and cross multiply through opposite numerator and denominator simultaneously combined the solve product of numerator. and get the lowest term of the denominator and numerator after you combined..
let c= quotient
c r/d which means if u divide a number by the divisor and if it contains a remainder , then put it in the formula ..
example: 5 divide it by 3
quotient is 1 remainder is 2
c r/d mixed fraction is 1 2/3
checking: multiply the divisor into quotient and add the numerator.. ans=5