Menyelesaikan The cost of one pen is 2 13/30 What is the cost of 18 such pens ? | 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

$$2 \frac { 13 } { 30 } . 18$$