हल करना (1 + 2) ^ - 1 + (2 + 1) ^ 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

$$(1+2)^{-1}+(2--1)^{1}$$