Wiskunde Multiple Choice Vraag uit Gricha's Wiskundige Vragenbank

$https://latex.codecogs.com/png.image?\dpi{110}\frac ab - \frac cd =$	A. $\large\boldsymbol{\frac{ad\,-\,bc}{bd} }$
	B. $\large\boldsymbol{\frac {a\,-\,c} {b\,+\,d} }$
	C. $\large\boldsymbol{\frac {a\,-\,c} {b\,-\,d} }$
	D. $\boldsymbol{ad-bc}$
	E. $\large\boldsymbol{\frac {bc\,-\,ad} {bd} }$

[ B-1738 - op net sinds 22.6.15-(e)-3.11.2023 ]

Translation in E N G L I S H

See above

Oplossing - Solution

Breng beide noemers op bd en je verkrijgt de breuk van A.
$https://latex.codecogs.com/png.image?\dpi{110}\frac ab-\frac cd=\frac{ad}{bd}-\frac {bc}{bd}=\frac{ad-bc}{bd}$

$https://latex.codecogs.com/png.image?\dpi{110}\frac ab - \frac cd =$	A. \(\large\boldsymbol{\frac{ad\,-\,bc}{bd} }\)
	B. \(\large\boldsymbol{\frac {a\,-\,c} {b\,+\,d} }\)
	C. \(\large\boldsymbol{\frac {a\,-\,c} {b\,-\,d} }\)
	D. \(\boldsymbol{ad-bc}\)
	E. \(\large\boldsymbol{\frac {bc\,-\,ad} {bd} }\)