Question 272540: the sum of three times a number and 7 more than the number is the same as the difference between -11 and twice the number help solve... Answer by oberobic(2304) (Show Source):
You can put this solution on YOUR website! x = the number
3x = three times the number
x+7 = 7 more than the number
2x - (-11) = twice the number minus -11 (if that is what you mean?)
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3x + x+7 = 2x - (-11) = 2x+11
4x + 7 = 2x + 11
2x = 4
x = 2
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Checking...
3x + x+7 = 3(2) + 2+7 = 6+9 = 15
2x + 11 = 2(2) + 11 = 15
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So, the number is 2.
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