1.1.
1.1、35/(25-15m)=7/(5-3m)2、1/(3-6p)-3/(4p-2)=(1/(1-2p))(1/3+3/2)=11/(6(1-2p))3、(b³c+3b^4)/(c²+3bc)=(b³(c+3b))/(c(c+3b))=b³/c4、(21x³-14x^5)/35x^4=(21-14x²)/35x=(3-2x²)/5x