हल करना 12 - [3 + \{7 - (4 + 1)\}] | 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

$$12-[3+\{7-(4+1)\}]$$