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Transcript 
Steps for solving subtraction of
mixed numbers with unlike
denominators:
1.Find the LCD
2.Write equivalent fractions
3.Subtract the fractions, regroup if
necessary, then subtract the
whole numbers
4.Simplify the answer
LCD
Lowest
Problem = Equivalent Fraction Terms
3 5
4
5
2
-1
5
3
2
5
3
2
5
LCD
Lowest
Problem = Equivalent Fraction Terms
4
1 4 =4 5
5 +
4
4 4
2
–3
4
2
– 3
4
3
3
1
1
=
4
4
LCD
8– 8
4-4,8
LCD = 8
Lowest
Problem = Equivalent Fraction Terms
3
5x 1= 5 8 13
4 = 4 + =3
x 1=
8
8 8
3x 2= 6
–2
=2
4x 2= 8
8
6
– 28
7 17
1
8 8
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