हल करना (-(1)/(7))\times((7)/(9) | 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

$$(- \frac{ 1 }{ 7 } ) \times ( \frac{ 7 }{ 9 }$$