How can we get Equation \[B\] from Equation \[A\]? \begin{aligned}
A.&&3x-1&=7
\\\\
B.&&3x&=8
\end{aligned}

To derive Equation \[B\] from Equation \[A\], follow these steps:

1. **Start with Equation \[A\]:**  
   \[
   3x - 1 = 7
   \]

2. **Add 1 to both sides of the equation** to eliminate the \(-1\) on the left side:  
   \[
   3x - 1 + 1 = 7 + 1
   \]

3. **Simplify both sides:**  
   \[
   3x = 8
   \]

Now, you have Equation \[B\]:  
\[
3x = 8
\]

This process involves isolating the term with \(x\) on one side by removing the constant on the left side through addition.

Would you like further details on this process

Learn how to derive Equation B from Equation A step-by-step. This problem involves solving linear equations in algebra, specifically isolating the variable x. Suitable for students in Grades 7-9.

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