हल करना (v) - 7 + 5 - (- 7 - 12) | Equatix - Math Solver

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

a⋅(b-2)=3b

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

a⋅(b-2)=3b

Question

$$( v ) - 7 + 5 - ( - 7 - 12 )$$