You can put this into the onsite calculator....However here's a method that works well when we have two fractions that have "1" as numerators:
Write the second denominator first, then write the sign between the fractions, and then write the first denominator.
So we have .... 30 - 7 = 23
Multiply both denominators 30 * 7 = 210
Put the first result over the second.........
23/210
And there's your answer......note....we might have to reduce this if the denominators have common factors, but that's not the case here.
You can put this into the onsite calculator....However here's a method that works well when we have two fractions that have "1" as numerators:
Write the second denominator first, then write the sign between the fractions, and then write the first denominator.
So we have .... 30 - 7 = 23
Multiply both denominators 30 * 7 = 210
Put the first result over the second.........
23/210
And there's your answer......note....we might have to reduce this if the denominators have common factors, but that's not the case here.