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23394958388339392919384849495040201929494939393933939399220102939488448848575757457842191030484885589485859466a=1
We move all terms to the left:
23394958388339392919384849495040201929494939393933939399220102939488448848575757457842191030484885589485859466a-(1)=0
We move all terms containing a to the left, all other terms to the right
23394958388339392919384849495040201929494939393933939399220102939488448848575757457842191030484885589485859466a=1
a=1/23394958388339392919384849495040201929494939393933939399220102939488448848575757457842191030484885589485859466
a=1/23394958388339392919384849495040201929494939393933939399220102939488448848575757457842191030484885589485859466
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