Question 520452
"One number is twice another. Their sum is 9.find the two numbers"


x = one number
2x = other number


x + 2x = 9 {their sum is 9}
3x = 9 {combined like terms}
x = 3 {divided both sides by 3}
2x = 6 {substituted 3, in for x, into 2x}


3 and 6 are the two numbers
<br>For more help from me, visit: <a href = "http://www.algebrahouse.com/" target = "_blank">www.algebrahouse.com</a><br><br><br>