हल करना b. (- 12) / (- 2) + (- (15)) / (- 3) + (- (- 20)) / (5) = | 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

$$( - 12 ) : ( - 2 ) - ( + 15 ) : ( - 3 ) - ( - 20 ) : ( + 5 ) =$$