Answer:
3/4 - 3/10 = 9/
20
= 0.45
Step-by-step explanation:
Subtract: 3/
4
- 3/
10
= 3 · 5/
4 · 5
- 3 · 2/
10 · 2
= 15/
20
- 6/
20
= 15 - 6/
20
= 9/
20
For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(4, 10) = 20. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 4 × 10 = 40. In the following intermediate step, the fraction result cannot be further simplified by canceling.
In other words - three quarters minus three tenths = nine twentieths.
