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

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

Algebra.Com

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) (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

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