If 2x+7 =12, then what is 4x-7?

If 2x+7 =12, then what is 4x-7? ?

Created: 1 year ago | Updated: 2 months ago | Created By:

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Institution: Bangladesh Shilpa Bank Ltd Exam: Bangladesh Shilpa Bank Ltd - Officer - 2004
Topic: Arithmetic Mathematics (পাটিগণিত), Subject: Mathematics (সাধারণ গণিত)

Best Answer Explained in Below-:

To solve the equation \(2x + 7 = 12\), we first isolate \(x\). We do this by subtracting 7 from both sides:

\[
2x + 7 - 7 = 12 - 7
\]

This simplifies to:

\[
2x = 5
\]

Next, to solve for \(x\), we divide both sides by 2:

\[
x = \frac{5}{2} = 2.5
\]

Now that we have the value of \(x\), we can substitute it into the expression \(4x - 7\):

\[
4x - 7 = 4(2.5) - 7
\]

Calculating \(4(2.5)\):

\[
4 \times 2.5 = 10
\]

Now substitute back into the expression:

\[
10 - 7 = 3
\]

Thus, the value of \(4x - 7\) is 3. This confirms that the correct answer is option C) 3. By following these steps, we efficiently utilize algebraic principles to find the desired value based on the initial equation.

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If 2x+7 =12, then what is 4x-7? ?

৫ অংকের ক্ষুদ্রতম সংখ্যা ও ৪ অংকের বৃহত্তম সংখ্যার পার্থক্য কত?

a+b=7,a2+b2=25 হলে,নিচের কোনটি abএর মান কত হবে?

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