Latest Book Aptitude Question SOLUTION: twenty-one is three times the difference between four times a number and five. find the number.

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Previous Question: the difference between a number and fifteen is seven. find the number. Next Question: 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.

(#M40035733) BOOK question Keep an EYE

twenty-one is three times the difference between four times a number and five. find the number.: Asked In Book (10 years ago); Unsolved; Is this Puzzle helpful? (0) (0) Submit Your Solution Algebra

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Previous Question: the difference between a number and fifteen is seven. find the number. Next Question: 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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How many times can you subtract 7 from 83, and what is left afterwards? You can subtract it as many times as you want, and it leaves 76 every time.

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