QuestionAugust 24, 2025

Solve the equation. vert x+5vert =3x+3 x=[?]

Solve the equation. vert x+5vert =3x+3 x=[?]
Solve the equation.
vert x+5vert =3x+3
x=[?]

Solution
4.0(238 votes)

Answer

x = 1 Explanation 1. Consider the positive case Assume x + 5 = 3x + 3. Solve for x: \[ x + 5 = 3x + 3 \] \[ 5 - 3 = 3x - x \] \[ 2 = 2x \] \[ x = 1 \] 2. Verify the solution for the positive case Substitute x = 1 back into the original equation: \[ |1 + 5| = 3(1) + 3 \] \[ 6 = 6 \] The solution is valid. 3. Consider the negative case Assume -(x + 5) = 3x + 3. Solve for x: \[ -x - 5 = 3x + 3 \] \[ -5 - 3 = 3x + x \] \[ -8 = 4x \] \[ x = -2 \] 4. Verify the solution for the negative case Substitute x = -2 back into the original equation: \[ |-2 + 5| = 3(-2) + 3 \] \[ 3 = -6 + 3 \] \[ 3 = -3 \] The solution is not valid.

Explanation

1. Consider the positive case<br /> Assume $x + 5 = 3x + 3$. Solve for $x$:<br />\[ x + 5 = 3x + 3 \]<br />\[ 5 - 3 = 3x - x \]<br />\[ 2 = 2x \]<br />\[ x = 1 \]<br /><br />2. Verify the solution for the positive case<br /> Substitute $x = 1$ back into the original equation:<br />\[ |1 + 5| = 3(1) + 3 \]<br />\[ 6 = 6 \]<br /> The solution is valid.<br /><br />3. Consider the negative case<br /> Assume $-(x + 5) = 3x + 3$. Solve for $x$:<br />\[ -x - 5 = 3x + 3 \]<br />\[ -5 - 3 = 3x + x \]<br />\[ -8 = 4x \]<br />\[ x = -2 \]<br /><br />4. Verify the solution for the negative case<br /> Substitute $x = -2$ back into the original equation:<br />\[ |-2 + 5| = 3(-2) + 3 \]<br />\[ 3 = -6 + 3 \]<br />\[ 3 = -3 \]<br /> The solution is not valid.
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