Math, asked by tanishkakade546, 17 days ago

the product of a number 12 decreased by 7 is 105

Answers

Answered by harendran907

9

Step-by-step explanation:

The original number is 12. The number added to it is 9; 12+9= 21; 21 times 5=105.

(12+x)5=105; 60+5x=105; 5x=45; x=9

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