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OpenStudy (anonymous):
One number is 800 less than 3 times the other, and their sum is 1,200. Find the numbers. Which of the following equations can be used to solve the problem if the smaller number is x? A. 2x - 800 = 1,200 B. 3x - 800 = 1,200 C. 4x - 800 = 1,200
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OpenStudy (perl):
y = 3x- 800 x + y = 1200
OpenStudy (anonymous):
thank you
OpenStudy (perl):
then solve by substitution
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