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Solve for x x + 21 = -2x

Solve for x x + 21 = -2x
asked 103k views
10 votes
Solve for x x + 21 = -2x

asked
User Joseph Marikle
by
8.3k points

1 Answer

5 votes

Answer

-7

Explanation:

x + 21 = -2 x

-x -x

21 = -3 x

--- -----

-3 -3

-7 = x

answered
User Ramusus
by
8.7k points
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