Question 634932
4a is both 6-b and 2-b. So 6-b = 2-b


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Another way to say it is...


4a=6-b ... Start with the first equation.


2-b=6-b ... Replace '4a' with '2-b' (since 4a = 2-b)


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Now solve for b. Then use the solution to find 'a'.