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12345678900765432112345678900987654321+09876543212345678907654321234567890987654321234567890=f
We move all terms to the left:
12345678900765432112345678900987654321+09876543212345678907654321234567890987654321234567890-(f)=0
We add all the numbers together, and all the variables
-1f+51+9.8765432123457E=0
We add all the numbers together, and all the variables
-1f+77.84722794211=0
We move all terms containing f to the left, all other terms to the right
-f=-77.84722794211
f=-77.84722794211/-1
f=77+0.84722794211/1
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