हल करना ) 6 7/9 - 21/57 | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$6 \frac { 7 } { 9 } - \frac { 21 } { 57 }$$