Is 6 a solution of 5(c - 9) = - 15?

5( c - 9 ) = - 15

Opening Brackets ,

= > 5( c ) - 5( 9 ) = - 15

= > 5c - 45 = - 15

Add 45 on both sides,

= > 5c - 45 + 45 = - 15 + 45

= > 5c = 30

Divide by 5 on both sides,

= > 5c / 5 = 30 / 5

= > c = 6

Hence, 6 is the solution of the given equation.

The density of the cube is 40