SOLUTION: This is a fraction problem. Please show how you solved it. 1/3 X + 3/4 X = 13 Thank you Annie

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: This is a fraction problem. Please show how you solved it. 1/3 X + 3/4 X = 13 Thank you Annie      Log On


   

Question 93823: This is a fraction problem. Please show how you solved it.
1/3 X + 3/4 X = 13
Thank you
Annie
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
1/3=4/12
3/4=9/12 now add these & set them=13
4x/12+9x/12=13
13x/12=13 now cross multiply
13x=12*13 now divide both sides by 13
x=12 answer
proof
1*12/3+3*12/4=13
4+36/4=13
4+9=13
13=13