हल करना (3 + 5/- 7) = ? | 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

$$( 3 + \frac { 5 } { - 7 } ) = ?$$