SOLUTION: John is seven years younger than his sister Ann. The sum of their ages is 45. Find john's age

Algebra.Com
Question 1067233: John is seven years younger than his sister Ann. The sum of their ages is 45. Find john's age
Answer by Boreal(15235)   (Show Source): You can put this solution on YOUR website!
J=x
A=x+7
x+x+7=45
2x+7=45
2x=38
x=19
John is 19.

RELATED QUESTIONS

John is five years younger than twice Becky’s age. Nine years ago, Becky was 16 years... (answered by josgarithmetic)
Reex John’s father is five times older than Reex John and Reex John is twice as old as... (answered by josgarithmetic,greenestamps)
john is 5 years younger than robert. If the sum of their ages in 8 years time is 37, find (answered by greenestamps,mananth)
John's age is 2 years, less than three times Paul his son,s age. His son Mark is 15... (answered by josmiceli,drj)
john is 8 years older than his sister. 10 years ago the sum of there ages were 82.find... (answered by stanbon)
John is five years older than his sister. The product of their present ages is 150. (answered by ikleyn)
John is 4 years younger than her brother. Five years from now, the sum of their ages... (answered by Alan3354)
Pedro is five less than three times as old as his sister Sofia. John is twice as old as... (answered by mananth,josgarithmetic)
how do i work out a word problem in algebra format. john is 4 years younger than his... (answered by Edwin McCravy)