SOLUTION: twice a number, added to 3, is equal to the negative of the number. What is the number?

Question 352679: twice a number, added to 3, is equal to the negative of the number. What is the number?
Found 2 solutions by unlockmath, ewatrrr:
Answer by unlockmath(1688) (Show Source): You can put this solution on YOUR website!
Hello,,
Let x be the number so we can set up the following equation:
2x+3=-x
Subtract 3 and add x to both sides to get:
3x=-3
Divide by 3 to get:
x=-1
Got it?
RJ
www.math-unlock.com
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
Hi,
Let n represent the number
.
Question States: Write as You Read
2n + 3 = -n
.
Simplify and solve
3n = -3
.
n = -1
.
check your answer
2*(-1) + 3 = -(-1)
.
Have a great day!
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