Practice problem
Simplify the expression A+A+B+C+D+EA+A+B+C+D+EA+A+B+C+D+E when A=1B=A+AC=B+AD=C+Band E=D+C\begin{align} A&=1\\ B&=A+A\\ C&=B+A\\ D&=C+B\\ \text{and }E&=D+C \end{align}ABCDand E=1=A+A=B+A=C+B=D+C
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Type a concept, like “slope” or “photosynthesis”.
