21 divided by 7 / 3 (less than, greater than or equal to) 21 divided by 3 / 7

21 divided by 7 / 3 (less than, greater than or equal to) 21 divided by 3 / 7

less than

1 divided by X + 4 + 1 divided by X + 7 = 1 divided by X + 5 + 1 divided by X + 6

Divide on both sides
(x+4+x+7)/(x+4)(x+7)=(x+5+x+6)/(x+5)(x+6)
(2x+11)/(x²+11x+28)=(2x+11)/(x²+11x+30)
Denominators cannot be equal]
So 2x + 11 = 0
x=-11/2

Thirty four out of fifty-one, simplification

How does this work

5.8 times 8 / 25 + 0.32 times 4.7-8 divided by 50

5.8 * 8 / 25 + 0.32 * 4.7-8 △ 50 = 5.8 * 8 / 25 + 8 / 25 * 4.7-0.5 * 8 / 25 = 8 / 25 * (5.8 + 4.7-0.5) = 5.8 * 10 = 58, the problem has been solved, please adopt it