Answer:
1/2
Explanation:
4/10 = 2/5
9/10 - 2/5
LCD = 10
make the denominators the same as the LCD
9/10- 2x2 / 5x2
9/10 - 4/10
join the denominators
9-4/ 10
5/10 = simplify
=
9 - 4 = 5
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