What is $\frac{1}{12}+\frac{1}{12}$112+112?
Find the value of $\frac{1}{2}-\frac{1}{2}$12−12.
Find the value of $\frac{2}{8}-\frac{1}{8}$28−18.
Find the value of $\frac{2}{4}+\frac{1}{4}$24+14.
solve problems involving addition and subtraction of fractions with the same or related denominators, using different strategies