Answer:
3/8
Step-by-step explanation:
find greatest common factor wich will be 8, u need to multiply 2 by another number to get the denominator of 8
8÷2=4 so 2×4=8
multiply 1/2 by 4 to get a denominator of 8 and numerator of 4
now u have 7/8 -4/8 =3/8
