document.write( "Question 970216: Joanna is 'x' years old. Compared to Joanna, Betty is 6 years older and Mary is 2 years older. What is the total of their ages? \n" ); document.write( "
Algebra.Com's Answer #592925 by macston(5194)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "J=Joanna's age; B=Betty's age=J+6yrs; M=Mary's age=J+2yrs \n" ); document.write( "J+B+M=J+(J+6yrs)+(J+2yrs)=3J+8yrs \n" ); document.write( "J=x \n" ); document.write( "Sum of ages=3J+8yrs Substitute for J. \n" ); document.write( "Sum of ages=3x+8 yrs \n" ); document.write( " |