Question 242108
Let the first number = x
Thus, the second number is = 2x+4
And, the third number is = 3x-5
Their sum is 137.
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So, our equation then becomes:
{{{x+(2x+4)+(3x-5)=137}}}
Now solve for x to determine its value.  I'll let you do the algebra.
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Remember to check your answer by pluggin the x value in the equation.  Both sides must equal to each other in order for the answer to be valid.
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Done!  :)