Submergence increases the availability

What is the value of 7/9-11/12+12/16-1/8?

Simplify:

(√5 + √3)/(√5 − √3) + (√5 − √3)/(√5 + √3)

68% of 450 – 1008 ÷ 14 + 516 ÷ 43 =?

What is the value of (15²+8²) ÷17

What value should come in place of the question mark (?) in the following question?

20% of 1500 – 75% of 200 = 125% of ?

15% of ? = 30% of 320 + 17 ×√676 – 63.5 × 8

What should come in place of (?) question mark in the given expression.

(2⁵ × 3⁴) ÷ (6³) = ?

Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.

42 * 7 * 64 * 11 * 6 *4