we will set the denominator equal by multiplying both the numerator and denominator then just adding the numerator while keeping the denominator. look at my work. so your answer is 5/8
Find a common denominator for both. It is 8. So you leave 1/8 alone and you find out how much you have to multiply the other denominator to get It to 8. 2x4 is 8 so, you multiply 1x4 and that is 4. So the new equation is 4/8+1/8 and that is 5/8