book Maths Puzzle Numerical Ability

please help me solve this equation : 2a-6-(3a+a)=10-4a

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book Other Question

Kendra has 9/8 of a bowl of soup. She gives 3/4 of what she has to Scottie. what fraction of a whole bowl of soup does Scottie get? what fraction of the whole bowl does Kendra get? I know this is the answer for 2X^2-3X+1=0. But if it were to be left irrational root in simplest form would this be it?

3(+-)Sqrt 1 / 4