To do this multiply 1 by 4, then 3 by 5. 4 over 15 is your answer.
6x + (-9) or 6x - 9
Try looking at the terms for the same things. Such as the variable like X and the negatives add together and make a negative
Step-by-step explanation:

- Cost of one dozen of note books ( 12 note books ) = Rs 252


Finding the cost of 1 note book :
⟼ 
Finding the cost of 10 note books :
⟼ 

Hope I helped ! ツ
Have a wonderful day / night ! ♡
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