Question

7(50-7y\5)+5y= 45
Solve the equation ​

Answer 1

$\huge\bold{\gray{\sf{Answer:}}}$

$\bold{Explanation:}$

$\sf= > 7\bigg(50 - \dfrac{7y}{5}\bigg ) + 5y = 45$

$\sf = > 7\bigg( \dfrac{250 - 7y}{5} \bigg) + 5y = 45$

$\sf= > 7\bigg( \dfrac{250 - 7y}{5} \bigg) + \dfrac{25y}{5} = 45$

$\sf= > \dfrac{1750 - 49y + 25y}{5} = 45$

$\sf= > 1750 - 49y + 25y = 225$

$\sf= > 1750 - 24y = 25$

$\sf= > - 24y = 25 - 1750$

$\sf= > - 24y = - 1725$

$\sf= > y = \dfrac{1725}{24} = 71.87$

Or If I solve through this :

$\sf= > 7\bigg( \dfrac{50 - 7y}{5}\bigg ) + 5y = 45$

$\sf = > \dfrac{350 - 49y + 25y}{5} = 45$

$\sf= > 350 - 24y = 45 \times 5$

$\sf= > 350 - 24y = 225$

$\sf= > - 24y = 225 - 350$

$\sf= > - 24y = - 125$

$\sf= > y = \dfrac{125}{24} = 5.20$

Answer 2

$\huge\bold{\gray{\sf{Answer:}}}$

$\bold{Explanation:}$

$\sf= > 7\bigg(50 - \dfrac{7y}{5}\bigg ) + 5y = 45$

$\sf = > 7\bigg( \dfrac{250 - 7y}{5} \bigg) + 5y = 45$

$\sf= > 7\bigg( \dfrac{250 - 7y}{5} \bigg) + \dfrac{25y}{5} = 45$

$\sf= > \dfrac{1750 - 49y + 25y}{5} = 45$

$\sf= > 1750 - 49y + 25y = 225$

$\sf= > 1750 - 24y = 25$

$\sf= > - 24y = 25 - 1750$

$\sf= > - 24y = - 1725$

$\sf= > y = \dfrac{1725}{24} = 71.87$

Or If I solve through this :

$\sf= > 7\bigg( \dfrac{50 - 7y}{5}\bigg ) + 5y = 45$

$\sf = > \dfrac{350 - 49y + 25y}{5} = 45$

$\sf= > 350 - 24y = 45 \times 5$

$\sf= > 350 - 24y = 225$

$\sf= > - 24y = 225 - 350$

$\sf= > - 24y = - 125$

$\sf= > y = \dfrac{125}{24} = 5.20$