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How many solutions exist for the given equation?

3(x - 2) = 22 - x

A. zero
B. one
C. two
D. infinitely many

Sagot :

To determine how many solutions exist for the given equation:
[tex]\[ 3(x-2) = 22 - x \][/tex]

Let's solve the equation step-by-step:

1. Distribute the 3 on the left side:
[tex]\[ 3 \cdot x - 3 \cdot 2 = 22 - x \][/tex]
Which simplifies to:
[tex]\[ 3x - 6 = 22 - x \][/tex]

2. Move all terms involving [tex]\(x\)[/tex] to one side of the equation:
We add [tex]\(x\)[/tex] to both sides to get the [tex]\(x\)[/tex] terms together:
[tex]\[ 3x + x - 6 = 22 \][/tex]
This simplifies to:
[tex]\[ 4x - 6 = 22 \][/tex]

3. Isolate the [tex]\(x\)[/tex] term:
Add 6 to both sides to move the constant to the right side:
[tex]\[ 4x - 6 + 6 = 22 + 6 \][/tex]
This simplifies to:
[tex]\[ 4x = 28 \][/tex]

4. Solve for [tex]\(x\)[/tex]:
Divide by 4:
[tex]\[ \frac{4x}{4} = \frac{28}{4} \][/tex]
This simplifies to:
[tex]\[ x = 7 \][/tex]

After all these steps, we have found [tex]\(x = 7\)[/tex].

Conclusively, the equation [tex]\(3(x-2)=22-x\)[/tex] has a single unique solution. Therefore, the number of solutions is:

One