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ANEK [815]
2 years ago
7

Is it A. x= _ b.the solution is all real numbers c.there is no solution

Mathematics
1 answer:
Gemiola [76]2 years ago
8 0

The value of x in the equation is - 3.

<h3>How to find the  variable in an equation?</h3>

Variables are number represented by a letter in an equation.

Therefore,

-5x - 9 = 2x  + 12

subtract 12 from both sides of the equation

-5x - 9 = 2x  + 12

-5x - 9 - 12 = 2x  + 12 - 12

-5x - 21 = 2x

add 21 to both sides of the equation

-5x - 21 = 2x

-5x  - 21 + 21 = 2x + 21

-5x = 2x + 21

subtract 2x from both sides

-5x = 2x + 21

-5x - 2x = 2x -2x + 21

-7x = 21

divide both sides by -7

-7x / -7 = 21 / - 7

x = -3

learn more on equation here: brainly.com/question/7421811

#SPJ1

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