Answer:
2 1/28
Explanation:
Multiply both the numerator and denominator of each fraction by the number that makes its denominator equal the LCD. This is basically multiplying each fraction by 1.
(3/4×7/7)+(9/7×4/4)=?
Complete the multiplication and the equation becomes
21/28+36/28=?
The two fractions now have like denominators so you can add the numerators.
Then:
21+36/28=57/28=2 1/28