А
3a/(c-2b)+(b-1)/(a-2b=(3a²-6ab+cb-c-2b²+2b)/[(c-2b)(a-2b)]
б
-4m²/7w³+3m²/7w³=-m²/7w³
в
6g^5t^4/t³(3-8t³)-5g^5t^4/t³(3-8t³)=6g^5t/(3-8t³)-5g^5t/(3-8t³)=g^5t/(3-8t³)
г
(g-p)/(p-2)+(2p-g-2)/(p-2)=(p-2)/(p-2)=1
д
49p²/(7p-3b²)-9b^4/(7p-3b²)=(7p-3b²)(7p+3b²)/(7-3b²)=7p+3b²
е
6,4h^6/6,4h³(1-1,25h³)+3,6h^6/6,4h³(1-1,25h³)=
=6,4h³/6,4(1-1,25h³)+3,6h³/6,4(1-1,25h³)=10h³/6,4(1-1,25h³)=
=25h³/16(1-1,25h³)=25h³/(16-20h³)