+0

0
45
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I don't how to solve this equation

-2|7 - 9c| + 7 = -15

Apr 26, 2020

#1
+463
+2

Hi guest!

First off, we can start by subtracting 7 from both sides. We then get $$-2|7-9c|=-22$$

Then, we can divide both sides by -2. Now, we have $$|7-9c|=11$$.

Since there are the absolute value brackets, there are 2 different scenarios:

$$7-9c=11$$, AND $$7-9c=-11$$. Now we just solve for both equations.

$$7-9c=11$$

$$-9c=4$$

$$c=-\frac{4}{9}$$

AND

$$7-9c=-11$$

$$-9c=-18$$

$$c=2$$

So, the final answer is $$\boxed{c=2 \text{ AND } c=-\frac{4}{9}}$$

I hope this helped you, guest!

If you have any questions, don't hesitate to ask!

:)

.
Apr 26, 2020
edited by lokiisnotdead  Apr 26, 2020
#2
+109527
0