Best Answer

Let the unknown number be X:

3x-800 = 1200

Move -800 to the other side of the equation changing the - sign to a + sign:

3x = 1200+800

3x = 2000

Divide both sides of the equation by 3 to find the value of x:

x = 666 and 2/3 or 666.666.........recurring decimal

Q: The sum of two numbers is 1200 One number is 800 less than three times the other Find the number?

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