We need to solve the equation $\frac{3}{x+7} - \frac{1}{x+2} = 0$.

AlgebraEquationsRational EquationsSolving Equations
2025/7/8

1. Problem Description

We need to solve the equation 3x+71x+2=0\frac{3}{x+7} - \frac{1}{x+2} = 0.

2. Solution Steps

To solve the equation 3x+71x+2=0\frac{3}{x+7} - \frac{1}{x+2} = 0, we first add 1x+2\frac{1}{x+2} to both sides of the equation to get
3x+7=1x+2\frac{3}{x+7} = \frac{1}{x+2}
Next, cross-multiply to get
3(x+2)=1(x+7)3(x+2) = 1(x+7)
Expanding both sides gives
3x+6=x+73x + 6 = x + 7
Subtracting xx from both sides gives
2x+6=72x + 6 = 7
Subtracting 66 from both sides gives
2x=12x = 1
Dividing by 22 gives
x=12x = \frac{1}{2}
We need to check if this solution is valid by making sure it doesn't make any denominator zero.
x+7=12+7=1520x+7 = \frac{1}{2} + 7 = \frac{15}{2} \neq 0
x+2=12+2=520x+2 = \frac{1}{2} + 2 = \frac{5}{2} \neq 0
So the solution is valid.

3. Final Answer

x=12x = \frac{1}{2}

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