Question 319168
Let's replace the ? with an 'x'



{{{1/3+x=4/9}}} Start with the given equation.



{{{9(1/cross(3)+x)=9(4/cross(9))}}} Multiply both sides by the LCD {{{9}}} to clear any fractions.



{{{3+9x=4}}} Distribute and multiply.



{{{9x=4-3}}} Subtract {{{3}}} from both sides.



{{{9x=1}}} Combine like terms on the right side.



{{{x=(1)/(9)}}} Divide both sides by {{{9}}} to isolate {{{x}}}.



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Answer:


So the solution is {{{x=1/9}}}