High School

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Michael graphs the equations [tex]y=-\frac{1}{2} x+4[/tex] and [tex]y=x+1[/tex] to solve the equation [tex]-\frac{1}{2} x+4=x+1[/tex].

What are the solution(s) of [tex]-\frac{1}{2} x+4=x+1[/tex]?

Answer :

To solve the equation [tex]\(-\frac{1}{2}x + 4 = x + 1\)[/tex], you can follow these steps:

1. Combine Like Terms: Start by getting all the [tex]\(x\)[/tex]-terms on one side of the equation. You can do this by adding [tex]\(\frac{1}{2}x\)[/tex] to both sides:
[tex]\[
-\frac{1}{2}x + \frac{1}{2}x + 4 = x + \frac{1}{2}x + 1
\][/tex]
This simplifies to:
[tex]\[
4 = \frac{3}{2}x + 1
\][/tex]

2. Isolate the Variable: Next, you need to isolate the [tex]\(x\)[/tex]-term. Subtract 1 from both sides to undo the addition:
[tex]\[
4 - 1 = \frac{3}{2}x
\][/tex]
Which simplifies to:
[tex]\[
3 = \frac{3}{2}x
\][/tex]

3. Solve for [tex]\(x\)[/tex]: Finally, solve for [tex]\(x\)[/tex] by multiplying both sides by the reciprocal of [tex]\(\frac{3}{2}\)[/tex], which is [tex]\(\frac{2}{3}\)[/tex]:
[tex]\[
x = 3 \times \frac{2}{3}
\][/tex]
Simplifying this gives:
[tex]\[
x = 2
\][/tex]

Therefore, the solution to the equation [tex]\(-\frac{1}{2}x + 4 = x + 1\)[/tex] is [tex]\(x = 2\)[/tex].

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