Question

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Answer 1

Answer:

-6

-21

12

Step-by-step explanation:

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Answer 2

Answer:

- 6, - 21, 12

Step-by-step explanation:

(1)

2x - 7 = - 19 ( add 7 to both sides )

2x = - 12 ( divide both sides by 2 )

x = - 6

(2)

$\frac{x}{-3}$ + 5 = 12 ( subtract 5 from both sides )

$\frac{x}{-3}$ = 7 ( multiply both sides by - 3 to clear the fraction )

x = - 21

(3)

$\frac{3}{4}$ x - 5 = 4 ( add 5 to both sides )

$\frac{3}{4}$ x = 9 ( multiply both sides by 4 to clear the fraction )

3x = 36 ( divide both sides by 3 )

x = 12