1/4 or 0.75
1) Let's solve this expression firstly in fraction form:
Let's calculate the LCM, of 4,10. Factoring 4, 10 by prime numbers:
Note that we divided the 20 by each denominator, multiplied by the original numerator, and then subtracted. We did the same process for the second fraction. In the end, we simplified.
2) Let's solve this in decimal form
Let's divide each numerator by the corresponding denominator:
3 : 4 and 5: 10
3: 4 = 0.75
5:10 = 0.5
0.75 -0.5 placing a dot over the dot, and then proceeding the subtraction:
3) If we divide 1/4 we can easily find out that 1/4 is equivalent to 0.75