SOLUTION: Find a number such that if 3 times the number is decreased by 15 the result is twice the opposite of the number,

Question 378758: Find a number such that if 3 times the number is decreased by 15 the result is twice the opposite of the number,
Found 2 solutions by user_dude2008, mananth:
Answer by user_dude2008(1862) (Show Source): You can put this solution on YOUR website!
3x-15=-2x

3x+2x=15
5x=15
x=3
number is 3
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
let number be x
3 times the number less 15
3x-15 =-2x
+2x
3x+2x-15=2x-2x
5x-15=0
+15
3x+15-15=15
3x=15
/3
3x/3=15/3
x=5

RELATED QUESTIONS
Here is my problem: Find a number such that if 5 times the number is decreased by 14,... (answered by ankor@dixie-net.com)
When an unknown number is decreased by 15, the result is twice the opposite of that... (answered by ikleyn)
If 3 times a number is decreased by 5, the result is 7. Find the... (answered by stanbon,checkley71)
if 15 is decreased by 7 times the sum of 5 and 3 times a number, the result is 12 more... (answered by ewatrrr)
The opposite of a number is tripled then decreased by 7. The result is 3 greater than... (answered by JBarnum)
If the product of -3 and the opposite of a number is decreased by 7, the result is 1... (answered by ankor@dixie-net.com)
If the sum of a number and -5 is reduced by 7 the result is 15 less than three times the... (answered by ankor@dixie-net.com)
If the product of a number and -5 is reduced by 7, the result is 15 less than three times (answered by ankor@dixie-net.com)
If the Product of a number and -3 is reduced by 5, the result is 25 less than twice the... (answered by richwmiller)