Mathematics: Marcus painted 1/3 of his bedroom in 4/5 of an hour. at this rate how long will it take him to paint his entire room

Marcus painted 1/3 of his bedroom in 4/5 of an - id13451173715, Nathaliasmiles

xojade

10.07.2021

Option: D is the correct answer.

D.Multiply each side by −5, add 25 to each side

Step-by-step explanation:

We are given an algebraic expression in terms of variable x as follows:

$\dfrac{-1}{5}(x-25)=7$

Now, firstly we will multiply both side of the equation by -5 to get:

$\dfrac{-1}{5}\times (-5)(x-25)=7\times -5\\\\i.e.\\\\x-25=-35$

Now we add both side of the equation by 25 to get:

$x-25+25=-35+25\\\\i.e.\\\\x+0=-10\\\\i.e.\\\\x=-10$

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