A) To subtract fractions, the denominators must be equal first. In this case, 5, 7, and 10 are not equal.
To find a common denominator, we can find the least common multiple (LCM) of 5, 7, and 10 which is 70.
Now we can rewrite the fractions with the common denominator2/5 = 28/76/7 = 60/71/10 = 7/70
Now we can subtract the fractions28/70 - 60/70 - 7/7= (28 - 60 - 7) / 7= (-39) / 70
So, the result of A) 2/5 - 6/7 - 1/10 is -39/70.
B) To divide fractions, you must multiply by the reciprocal of the second fraction.
So, -1/2 divided by -3/4 is the same as (-1/2) * (-4/3) = 4/6 = 2/3.
So, the result of B) -1/2 : (- 3/4) is 2/3.
A) To subtract fractions, the denominators must be equal first. In this case, 5, 7, and 10 are not equal.
To find a common denominator, we can find the least common multiple (LCM) of 5, 7, and 10 which is 70.
Now we can rewrite the fractions with the common denominator
2/5 = 28/7
6/7 = 60/7
1/10 = 7/70
Now we can subtract the fractions
28/70 - 60/70 - 7/7
= (28 - 60 - 7) / 7
= (-39) / 70
So, the result of A) 2/5 - 6/7 - 1/10 is -39/70.
B) To divide fractions, you must multiply by the reciprocal of the second fraction.
So, -1/2 divided by -3/4 is the same as (-1/2) * (-4/3) = 4/6 = 2/3.
So, the result of B) -1/2 : (- 3/4) is 2/3.