Subtract
Give step by step explanation from a to f
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subtract: 3/4 from 7/8
Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8
For the 1st fraction, since 4 × 2 = 8,
3/4 = 3 × 2/4 × 2 = 6/8
Likewise, for the 2nd fraction, since 8 × 1 = 8,
7/8 = 7 × 1/8 × 1 = 7/8
Subtract the two like fractions:
6/8 - 7/8 = 6 - 7/8 = -1/8
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Step-by-step explanation:
a)7/8- 3/4
= 7/8- 3×2/4×2
= 7/8- 6/8
= 1/8
b) 4×8/5×8- -3×5/8×5
= 32/40 - (-15)/40
= 32/40 + 15/40
= 47/40
c) -6/7 - (-4)/7
= -6/7 + 4/7
= -2/7
d) -9×4/10×4 - 5×5/8×5
= -36/40 - 25/40
= -61/40
e) 5/9 - (-2)×3/3×3
= 5/9 + 6/9
= 11/9
f) -4/15 - 2×3/5×3
= -4/15 - 6/15
= -10/15
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