5.下列从左到右变形正确的是( )
0 298302 298310 298316 298320 298326 298328 298332 298338 298340 298346 298352 298356 298358 298362 298368 298370 298376 298380 298382 298386 298388 298392 298394 298396 298397 298398 298400 298401 298402 298404 298406 298410 298412 298416 298418 298422 298428 298430 298436 298440 298442 298446 298452 298458 298460 298466 298470 298472 298478 298482 298488 298496 366461
| A. | -$\frac{x+1}{x-y}$=$\frac{-x+1}{x-y}$ | B. | $\frac{{x}^{2}+{y}^{2}}{x+y}$=x+y | ||
| C. | $\frac{0.5a+b}{0.2a-0.3b}$=$\frac{5a+10b}{2a-3b}$ | D. | $\frac{a-b}{a+b}$=$\frac{b-a}{b+a}$ |