Respuesta :

3/10 you cross multiply 5x2=10 so the denominator will be 10 and then cross multiply the numberators by the different denominator make sense? so 5x 1=5 and that mean 1/2=5/10 and 4/5=8/10 and the final answer when u subtract is 3/10 makes sense? u know what i mean jelly bean?
4/5 - 1/2 =

3/10 in exact form

0.3 in decimal form

When subtracting a fraction, you always have to make sure your denominator/divisor's are the same.

Therefore you would find the Least Common Multiple of 5 and 2

Both would eventually come to 10, multiplying 4/5 by 2 on both the numerator and the denominator

Do the same with 1/2 except you multiply this one by 5 on both the numerator and the denominator.

Your fractions would then be  8/10 and 5/10

Then you subtract

8/10 - 5/10 = 3/10

(The Denominator does not change after all this)

Hope this helps :)