Question

please help- this question answer is really important for me....​

Answer 1

Answer:

Find the LCM of all the denominator. Denominator of 2,3. 4,5. 2,5,7. And then plus for better understanding goggle it

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Answer 2

Answer:

-7/372

Explanation:

(1/2-1/3) (3/4-4/5) ÷ (1/2-2/5+1/7)

Here,

We have to find firstly the lcm of denominators..

lcm of 2 and 3 = 6

lcm of 4 and 5 = 20

And, lcm of 2,5 and 7= 70

Now,

(1/2-1/3) (3/4-4/5) ÷ (1/2-2/5+1/7)

(3-2/6) ( 15- 16/20) ÷ (35 - 14 + 10/70)

=1/6 × -1/20 ÷ 31/70

=1/120 × 70/31

= -7/372