2x7x3x5 = 210 LCD
140
the lowest common denominator is 70 the numerators would become 63 and 30
A common denominator is 70.
It is 10
1/10 + 2/7 = 7/70 + 20/70 = 27/70
First find the common denominator, which is 70. Then convert both fractions to the common denominator. Then add the numerators. Last, convert to simplist terms. 7/10-2/7=49/70-20/70=29/70 29/70 is already in simplist terms, so the answer is: 29/70.
the answer is 70
2
It is 70
560
70
For something to have a common denominator, you would need two fractions to compare with each other. e.g, 1/2 and 7/2 have a common denominator.The number 70 can have a denominator 1, i.e. 70/1 = 70. It could also be written as 140/2=70. You would need another fraction to compare it to.