Question

what is 2/5 + 1/8 and what is 4/8 + 1/2

Answer 1

2/5 + 1/8 = 21/40
4/8 + 1/2 = 1

Answer 2

thanks

Answer 3

so to find 2/5 + 1/8 we first need common demonstrator (a number that is a dividable by 5 and 8 ,
the obvious candidate is just 5 x 8 which is 40

2/5 = 16/40
and 1/8 =5/40

now we have a common denominator we can simply add the numerators...

Answer 4

It's much easier to just multiply the denominators and then cross multiply, then add the top numbers of the fraction for your final answer.

Example:
2/5 + 1/8
5x8 = 40
5x1=5
2x8=16
16+5=21

Final result: 21/40