The following is a selected video from your teacher comm where you can browse over 450 complete math lessons with example videos interactive practice problems self tests and more try a complete lesson today at your teacher comm on the last math quiz tarah answered five sevenths of the problems correctly and Julia answered 7/10 of them correctly if each problem is worth the same amount who got the higher grade in this problem we know that on the last math quiz Tori answered five sevenths of the problems correctly and the Julia answered 7/10 of them correctly and that each problem is worth the same amount we want to find out who got the higher grade so we need to compare the number of problems that Tara answered correctly or 5/7 to the number of problems that Julia answered correctly or 7/10 to see which is greater notice the 5 sevenths and 7/10 are unlike fractions so we need to get a common denominator the common denominator of 7 and 10 is the least common multiple of 7 and 10 or 70 to get a 70 in the denominator of 5 7s we multiply the numerator and the denominator by 10 which gives us 57 years to get a 70 in the denominator of 7/10 we multiply the numerator and the denominator by 7 which gives us 49 7 years now we can see the 50 70 s is greater than 49 seventieth this means that 5/7 is greater than 7/10 since Terah answered five sevenths of the problems correctly I got the higher grade.

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