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3 years ago

Determine the value of x for the following equation. 3(-9 - 4x) -4 = 8x -9(x + 12)

Mathematics

2 answers:

Makovka662 [10]3 years ago

4 0

Answer:

-77/13

Distribute 3 to the ones in the parenthisis and do the same to the other side and distribute the negative nine. solve what is left and subtract the two terms and simply solve whats next.

Morgarella [4.7K]3 years ago

4 0

Answer: x = 7
3(-4x - 9) - 4 = 8x - 9(x + 12)
-12x - 27 - 4 = 8x - 9x - 108
-12 x - 31 = -x - 108
Add 31 on both side
-12x - 31 + 31 = - x - 108 + 31
-12x = -x - 77
- x from both said
-12x + x = -x -77 + x
-11x = -77
Divide both side of the equation by the same factor
-11x/-11 = -77/-11
X= 7

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Keywords: sequence, arithmetic sequence, geometric sequence, exponential sequence

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