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\frac{9\left(3d+2\right)}{4\left(3d+2\right)}+\frac{4\times 5d}{4\left(3d+2\right)}
Biex iżżid jew tnaqqas l-espressjonijiet, espandihom biex id-denominaturi tagħhom ikunu l-istess. L-inqas multiplu komuni ta' 4 u 3d+2 huwa 4\left(3d+2\right). Immultiplika \frac{9}{4} b'\frac{3d+2}{3d+2}. Immultiplika \frac{5d}{3d+2} b'\frac{4}{4}.
\frac{9\left(3d+2\right)+4\times 5d}{4\left(3d+2\right)}
Billi \frac{9\left(3d+2\right)}{4\left(3d+2\right)} u \frac{4\times 5d}{4\left(3d+2\right)} għandhom l-istess denominatur, żidhom billi żżid in-numeraturi tagħhom.
\frac{27d+18+20d}{4\left(3d+2\right)}
Agħmel il-multiplikazzjonijiet fi 9\left(3d+2\right)+4\times 5d.
\frac{47d+18}{4\left(3d+2\right)}
Ikkombina termini simili f'27d+18+20d.
\frac{47d+18}{12d+8}
Espandi 4\left(3d+2\right).