5/7 * 9/10 = 9/14

Should my answer be 45/70 or 9/14?

They are both correct, but 9/14 is the most simplified form. That would be the one to go with.

Thank you just making sure.

To determine the correct answer, let's go through the steps of multiplying fractions:

Step 1: Multiply the numerators (the numbers on the top) together.
5/7 * 9/10 = (5 * 9) / (7 * 10) = 45/70

Step 2: Simplify the fraction, if possible.
To simplify the fraction, identify a common factor between the numerator and the denominator and divide both by that factor. In this case, both 45 and 70 can be divided by 5.
45/70 = (45 ÷ 5) / (70 ÷ 5) = 9/14

So, the simplified answer is 9/14.

Therefore, your answer should indeed be 9/14, not 45/70.