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Firdavs [7]
3 years ago
5

Solve for x

1" title=" \frac{x}{a} = \frac{x}{b} " alt=" \frac{x}{a} = \frac{x}{b} " align="absmiddle" class="latex-formula">
Mathematics
1 answer:
lesya [120]3 years ago
6 0

Domain:\ a\neq0\ \wedge\ b\neq0

\dfrac{x}{a}=\dfrac{x}{b}\qquad|\text{cross multiply}\\\\bx=ax\qquad|\text{subtract ax from both sides}\\\\bx-ax=0\\\\x(b-a)=0\qquad|\text{divide both sides by }\ b-a\neq0\\\\x=0

\dfrac{x}{a}=\dfrac{x}{b}\\\\if\ a\neq b\ then\ x=0\\\\if\ a=b\ then\ x\in\mathbb{R}

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