mimiwhatsup
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1. Solve the equation.
21 = - 7n

Respuesta :

Answer by JKismyhusbandbae:

[tex]21=-7n\\\mathrm{Switch\:sides}\\-7n=21\mathrm\\\\\mathrm{Divide\:both\:sides\:by\:}-7\\\frac{-7n}{-7}=\frac{21}{-7}\\Simplify\\n=-3[/tex]

apologiabiology

remember that you can do anything to an equaiton as long as you do it to both sides

also remember that (+)/(-)=(-)


21=-7n

divide both sides by -7

(21/-7)=(-7n)/-7

(21/7)(1/-1)=(n)(-7/-7)

(3)(-1)=(n)(1)

-3=n

n=-3