What is the value of x $$ {0.081\over x}={0.09\over10}$$ ?

What is the value of $${0.74×1.23×0.13\over (0.37)^{3}+(0.41)^{3}-8(0.39)^{3}}$$ ?

If 12x – 15 y =9x + 5y, the value of $$ {x^{2}+{y^{2}}\over{x^{2}-y^{2}}}$$ is

The value of $${\sqrt{40+\sqrt{9\sqrt{81}}} }$$ is

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

125% of 2440 – 75% of 1856 = ?

For what value of m will the system of equations 18x-72y+13=0 and 7x-my-17=0 have no solution?

What is the value of X ?, if 7580 - X = 3440

Find the value of given expression. 

[76 – {90 ÷ 5 ⨯ (24 – 36 ÷ 3) ÷ 3}]