Question

with good explanation x/3-x/5+2x/7-3x/4=7/2​

Answer 1

Step-by-step explanation:

Solution :

$\: \frac{x}{3} - \frac{x}{5} + \frac{2x}{7} - \frac{3x}{4} = \frac{7}{2}$

L.C.M. = 420.

$= > \frac{140x - 84x + 120x - 315x}{420} = \frac{7}{2}$

$= > \frac{260x - 399x}{420} = \frac{7}{2}$

$= > \frac{ - 139x}{240} = \frac{7}{2}$

$= > - 278x = 1680$

$= > x = - 6.04$

Answer 2

Step-by-step explanation:

Find the height of a cylinder whose radius is 7 cm and the total surface area is 968 cm2.