Book Maths Puzzle Area and Volume

A triangle has a perimeter of 197 cm. The sum of the smallest and medium sides is 49 more than the longest side. The difference between the longest and shortest sides is 22. Find the legth of all three sides.



HELP!



I know I have to solve by coming p with a system of equation, what I have is:

X=longest, Y=shortest, Z=medium



Y + Z = X + 49

X - 22 = Y

X + Y + Z = 197



Thank you for your time.

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