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\frac{x+2}{\left(x-1\right)\left(x+5\right)}-\frac{3}{\left(x+1\right)\left(x+5\right)}
ដាក់ជាកត្តា x^{2}+4x-5។ ដាក់ជាកត្តា x^{2}+6x+5។
\frac{\left(x+2\right)\left(x+1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}-\frac{3\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
ដើម្បីបូក ឬដក​កន្សោម ពន្លាតពួកវាដើម្បីធ្វើឲ្យភាគបែងរបស់ពួកវាដូចគ្នា។ ពហុគុណរួមតូចបំផុតនៃ \left(x-1\right)\left(x+5\right) និង \left(x+1\right)\left(x+5\right) គឺ \left(x-1\right)\left(x+1\right)\left(x+5\right)។ គុណ \frac{x+2}{\left(x-1\right)\left(x+5\right)} ដង \frac{x+1}{x+1}។ គុណ \frac{3}{\left(x+1\right)\left(x+5\right)} ដង \frac{x-1}{x-1}។
\frac{\left(x+2\right)\left(x+1\right)-3\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
ដោយសារ \frac{\left(x+2\right)\left(x+1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)} និង \frac{3\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)} មានភាគបែងដូចគ្នា សូមដកពួកវាដោយការដកភាគយករបស់ពួកវា។
\frac{x^{2}+x+2x+2-3x+3}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
ធ្វើផល​គុណនៅក្នុង \left(x+2\right)\left(x+1\right)-3\left(x-1\right)។
\frac{x^{2}+5}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
បន្សំដូចជាតួនៅក្នុង x^{2}+x+2x+2-3x+3។
\frac{x^{2}+5}{x^{3}+5x^{2}-x-5}
ពន្លាត \left(x-1\right)\left(x+1\right)\left(x+5\right)។
\frac{x+2}{\left(x-1\right)\left(x+5\right)}-\frac{3}{\left(x+1\right)\left(x+5\right)}
ដាក់ជាកត្តា x^{2}+4x-5។ ដាក់ជាកត្តា x^{2}+6x+5។
\frac{\left(x+2\right)\left(x+1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}-\frac{3\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
ដើម្បីបូក ឬដក​កន្សោម ពន្លាតពួកវាដើម្បីធ្វើឲ្យភាគបែងរបស់ពួកវាដូចគ្នា។ ពហុគុណរួមតូចបំផុតនៃ \left(x-1\right)\left(x+5\right) និង \left(x+1\right)\left(x+5\right) គឺ \left(x-1\right)\left(x+1\right)\left(x+5\right)។ គុណ \frac{x+2}{\left(x-1\right)\left(x+5\right)} ដង \frac{x+1}{x+1}។ គុណ \frac{3}{\left(x+1\right)\left(x+5\right)} ដង \frac{x-1}{x-1}។
\frac{\left(x+2\right)\left(x+1\right)-3\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
ដោយសារ \frac{\left(x+2\right)\left(x+1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)} និង \frac{3\left(x-1\right)}{\left(x-1\right)\left(x+1\right)\left(x+5\right)} មានភាគបែងដូចគ្នា សូមដកពួកវាដោយការដកភាគយករបស់ពួកវា។
\frac{x^{2}+x+2x+2-3x+3}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
ធ្វើផល​គុណនៅក្នុង \left(x+2\right)\left(x+1\right)-3\left(x-1\right)។
\frac{x^{2}+5}{\left(x-1\right)\left(x+1\right)\left(x+5\right)}
បន្សំដូចជាតួនៅក្នុង x^{2}+x+2x+2-3x+3។
\frac{x^{2}+5}{x^{3}+5x^{2}-x-5}
ពន្លាត \left(x-1\right)\left(x+1\right)\left(x+5\right)។