TeX Quellcode:
\begin{array}{rcl} 6yz-\{12+7[yz +16-3x(15+8y)]\}+13x &=&6yz-\{12+7[yz+16-3x\cdot 15+(-3x)\cdot 8y]\}+13x \cr\cr &=&6yz-\{12+7[yz+16-45x-24xy]\}+13x \cr\cr &=&6yz-\{12+7\cdot yz+7\cdot 16+7\cdot(-45x)+7\cdot (-24xy)\}+13x \cr\cr &=&6yz-\{12+7yz+112-315x-168xy\}+13x \cr\cr &=&6yz-12-7yz-112+315x+168xy+13x \cr\cr &=&-yz-124+328x+168xy \cr\cr &=&168xy-yz+328x-124 \end{array}