exam Maths Puzzle Numerical Ability

If 3 is added to a number and this sum is doubled, the result is 2 more than the number. Find the number.

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Hello,


I need help writing and solving this inequality:

Forty less three times a number is no less than the number increased by 15.


Thank you Solve the system graphically.
2x+y=12
2x+y=22

please show me how to graph this