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Vlad1618 [11]
2 years ago
5

Solve for x: 12 (x – 4)| + 7 = 25.

Mathematics
1 answer:
Rasek [7]2 years ago
8 0

Question:

Solve for x: $12|x-4|+7=25$. Fill in both values for x below. Write the greater value for x in the first column.

Answer:

x=5.5 and x=2.5 are the values for x.

Explanation:

The equation is $12|x-4|+7=25$

Subtracting both sides by 7,

$12|x-4|=18$

Dividing both sides by 12,

$|x-4|=1.5$

Now, we shall write the equation by removing modulus by adding plus and minus on the other side of the equation.

x-4=1.5 or x-4=-1.5

Solving the equation x-4=1.5, we get,

$\begin{aligned} x-4 &=1.5 \\ x &=1.5+4 \\ x &=5.5 \end{aligned}$     or      $\begin{aligned} x-4 &=-1.5 \\ x &=-1.5+4 \\ x &=2.5 \end{aligned}$

Thus, the solutions are x=5.5 and x=2.5

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