Example

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

Question

$$\frac{2.5x+3.7x}{0.2}+\frac{0.02x+0.03}{0.4}=\frac{24.9}{0.4}$$

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