You can put this solution on YOUR website! so you have to isolate the "a"
switch the equation around for mathematical purposes
2a-ab+3=y
subtract both sides by 3
2a-ab+3-3=y-3
this is
2a-ab=y-3
factor out an "a"
a(2-b)=y-3
divide both sides by "2-b" to isolate the "a"
a=(y-3)/(2-b)
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