Question

solve the equation
3(n--5)= -21

Answer 1

Answer:

$n = - 2$

is the correct answer...

Step-by-step explanation:

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Answer 2

$\large\bold{\underline{\underline{Given:-}}}$

$3(n - 5) = - 21$

$\large\bold{\underline{\underline{To\:find:-}}}$

The value of $n$.

$\large\bold{\underline{\underline{Solution:-}}}$

:⟼  $3(n - 5) = - 21$

:⟼  $3n - 15 = - 21$

:⟼  $3n = - 21 + 15$

:⟼  $3n = - 6$

:⟼  $n = \frac{ - 6}{3}$

:⟼  $\boxed{ n=-2 }$

$\large\bold{\underline{\underline{To\:verify:-}}}$

:⟼  $3( - 2 - 5) = - 21$

:⟼  $3( - 7) = - 21$

:⟼  $- 21 = - 21$

:⟼  L. H. S. = R. H. S.

Hence verified.

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