Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\frac{11}{12}\times\frac{2}{5}-\frac{4}{7}+\frac{11}{12}\times\frac{3}{4}$$

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