Question

the value of the variable in the equation 5(-7x+3)=x-21 is :​

Answer 1

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Answer 2

$\sf{\underline{\underline{Given:}}}$

$\rm\red{\implies 5(-7x + 3) = x - 21}$

$\sf{\underline{\underline{To\:Find:}}}$

$\rm\green{\longrightarrow value\:of\:the\:variable...?}$

$\sf{\underline{\underline{SOluTIoN:}}}$

$\rm\orange{\implies 5(-7x + 3) = x - 21}$

$\rm\purple{\implies -35x + 15 = x - 21}$

$\rm\red{\implies -35x - x = -21 - 15}$

$\rm\green{\implies -36x = -36}$

$\rm\orange{\implies -x = \dfrac{\cancel{-36}}{\cancel{36}}}$

$\rm\purple{\implies \cancel{-}x = \cancel{-}1}$

$\rm\red{\implies x = 1}$

$\sf{\underline{\underline{Hence:}}}$

$\rm\green{\longrightarrow value\:of\:variable\:(x) = 1}$