KnowledgeBoat Logo
|

Mathematics

Solve the following equation and check your answer:

3x53=x33x - \dfrac{5}{3} = x - 3

Linear Eqns One Variable

2 Likes

Answer

We have:

=3x53=x33xx=533[Transposing 53 to RHS and +x to LHS]2x=5932x=43x=43×2x=23×1\phantom{=} 3x - \dfrac{5}{3} = x - 3 \\[1em] \Rightarrow 3x - x = \dfrac{5}{3} - 3 \quad \text{[Transposing } -\dfrac{5}{3} \text{ to RHS and +x to LHS]} \\[1em] \Rightarrow 2x = \dfrac{5 - 9}{3} \\[1em] \Rightarrow 2x = -\dfrac{4}{3} \\[1em] \Rightarrow x = -\dfrac{4}{3 \times 2} \\[1em] \Rightarrow x = -\dfrac{2}{3 \times 1}

∴ x = 23-\dfrac{2}{3}

Check:

LHS=3x53LHS=3(23)53LHS=253LHS=113RHS=x3RHS=233RHS=113\text{LHS} = 3x - \dfrac{5}{3} \\[1em] \phantom{\text{LHS}} = 3\left(-\dfrac{2}{3}\right) - \dfrac{5}{3} \\[1em] \phantom{\text{LHS}} = -2 - \dfrac{5}{3} \\[1em] \phantom{\text{LHS}} = -\dfrac{11}{3} \\[2em] \text{RHS} = x - 3 \\[1em] \phantom{\text{RHS}} = -\dfrac{2}{3} - 3 \\[1em] \phantom{\text{RHS}} = -\dfrac{11}{3}

Hence, LHS = RHS.

Answered By

3 Likes


Related Questions