Resolver 9a, - 5a, 7a, - a, - 4a | 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

$$9 a , - 5 a , 7 a , - a , - 4 a$$