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If 2x+5/3=1/4x+4, then x=?...

If `2x+5/3=1/4x+4`, then x=?

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To solve the equation \(2x + \frac{5}{3} = \frac{1}{4}x + 4\), we will follow these steps: ### Step 1: Rearranging the equation We start by moving all terms involving \(x\) to one side and the constant terms to the other side. \[ 2x - \frac{1}{4}x = 4 - \frac{5}{3} \] ### Step 2: Finding a common denominator To simplify the left side, we need to find a common denominator for the fractions. The common denominator for \(1\) and \(4\) is \(4\). \[ 2x = \frac{8}{4}x \] Now, substituting this into our equation gives us: \[ \frac{8}{4}x - \frac{1}{4}x = 4 - \frac{5}{3} \] ### Step 3: Simplifying the left side Now we can combine the \(x\) terms on the left side: \[ \frac{8x - 1x}{4} = \frac{7x}{4} \] ### Step 4: Simplifying the right side Next, we simplify the right side. To do this, we need to find a common denominator for \(4\) and \(3\), which is \(12\): \[ 4 = \frac{48}{12} \quad \text{and} \quad \frac{5}{3} = \frac{20}{12} \] So, we can rewrite the right side: \[ 4 - \frac{5}{3} = \frac{48}{12} - \frac{20}{12} = \frac{28}{12} \] ### Step 5: Equating both sides Now we have: \[ \frac{7x}{4} = \frac{28}{12} \] ### Step 6: Cross-multiplying To eliminate the fractions, we cross-multiply: \[ 7x \cdot 12 = 28 \cdot 4 \] This simplifies to: \[ 84x = 112 \] ### Step 7: Solving for \(x\) Now, divide both sides by \(84\): \[ x = \frac{112}{84} \] ### Step 8: Simplifying the fraction We can simplify \(\frac{112}{84}\) by dividing both the numerator and the denominator by \(28\): \[ x = \frac{4}{3} \] ### Final Answer Thus, the solution to the equation is: \[ \boxed{\frac{4}{3}} \]
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Knowledge Check

  • If x + 1/x = 5, then the value of (x ^(4) + 3x ^(3) + 5x ^(2) + 3x + 1)/(x ^(4) +1) is:

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    `(1)/(2)`
    B
    2
    C
    `(1)/(4)`
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  • If 4 (4x 5) gt 2x -1 gt 4x - 3 then the value of x is

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