SOLUTION: 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
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Question 563855: 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
Answer by TutorDelphia(193) (Show Source): You can put this solution on YOUR website!
the sum of 3*x and 7 more than x = the difference between -11 and twice x
3*x+(x+7)=-11-2x
3x+x+7=-11-2x
combine like terms
4x+7=-11-2x
add 2x to both sides
6x+7=-11
subtract 7 from both sides
6x=-18
divide both sides by 6
x=-3
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