SOLUTION: Hello, a friend of my (Louie) told me (or rather half the class) that this site is great if you dont understand something in algebra. I have a question could someone tell me how to

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: Hello, a friend of my (Louie) told me (or rather half the class) that this site is great if you dont understand something in algebra. I have a question could someone tell me how to      Log On


   

Question 110891: Hello, a friend of my (Louie) told me (or rather half the class) that this site is great if you dont understand something in algebra. I have a question could someone tell me how to solve these problems? x/3 = 2/9 5/a = 3/2 3/a+1 =½ maybe some one could help me with those problems.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
#1

x%2F3=2%2F9 Start with the given ratio


x=%282%2F9%29%2A3 Multiply both sides by 3


x=6%2F9 Multiply


x=2%2F3 Simplify



So our answer is x=2%2F3 which is roughly 0.666666666666667



#2


5%2Fa=3%2F2 Start with the given ratio


5=%283%2F2%29%2Aa Multiply both sides by a

5%2A2=3%2Aa Multiply both sides by 2

10=3%2Aa Multiply

10%2F3=a Divide both sides by 3



So our answer is a=10%2F3 which is roughly 3.33333333333333




#3



3%2F%28a%2B1%29=1%2F2 Start with the given ratio


3=%281%2F2%29%2A%28a%2B1%29 Multiply both sides by a+1

3%2A2=1%2A%28a%2B1%29 Multiply both sides by 2

6=a%2B1 Multiply

5=a Subtract 1 from both sides



So our answer is a=5