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2 votes

\sf 2x+21=3




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2 Answers

3 votes

Answer:


\bf x=-9

Explanation:


\sf 2x+21=3

Subtract 21 from both sides:-


\sf 2x+21-21=3-21

Simplify


\sf 2x=-18

Divide both sides by 2:-


\sf \cfrac{2x}{2}=\cfrac{-18}{2}


\sf x=-9

User Nonremovable
by
8.0k points
6 votes


\sf \longmapsto \: 2x + 21 = 3


\sf \longmapsto2x = 3 - 21


\sf \longmapsto2x = - 18


\sf \longmapsto \: x = ( - 18)/(2)


\sf \longmapsto x = - 9

User Bleu
by
7.7k points

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