Resolver following operations. - 3(- 40 - (- 30)) + 5(45 - 30) - 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

$$- 3 ( - 40 - ( - 30 ) ) + 5 ( 45 - 30 ) - 20 \times ( - 2 )$$