हल करना ( ) d * (- 40) - (- 20) + (2) | 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

$$( - 30 ) - ( - 40 ) - ( - 20 ) + ( + 2 )$$