Example

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

Question

$$30 \frac { 50 } { 100 } + v - \frac { 80 } { 100 } = ( 30 + v ) - \frac { 60 } { 100 }$$

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