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3 years ago

Solve for x: one over five (5x + 12) = 18 please step this out for me

Mathematics

1 answer:

kobusy [5.1K]3 years ago

3 0

Answer:

x = 6/5

x = 1.2

x = 1 1/5

Step-by-step explanation:

The answers above are all the same, but in different forms.

The steps to getting x:

1. subtract 12 from the parenthesis which leaves us with 5x = 6

2. Then we want to divide 5 from x which gives up our answer 5x/5 = 6/5

Remember whatever you do on one side it has to be done on the other, hence the equal sign

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tangare [24]

The equation we have is:

$\frac{8}{5}a=-6$

To solve for "a", we want to isolate it in one side.

For this. we can start by multiplying each side by 5. This will make the denominator to cancel out:

$\begin{gathered} 5\cdot\frac{8}{5}a=5\cdot(-6) \\ 8a=-30 \end{gathered}$

Now, we can divide both sides by 8, which will cancel the coefficient 8 multiplying "a":

$\begin{gathered} \frac{8a}{8}=-\frac{30}{8} \\ a=-\frac{15}{4} \end{gathered}$

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