Menyelesaikan 15 - 2x - 50xyz; 7(5 + a) + 3a k) | 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

$$\quad 7 ( 5 + a ) + 3 a$$