Question

2/9+{-3/7}

Answer 1

for adding fractions with different denominators (numbers on the bottom of the fraction), you must first put them in a same denominator by multiplying them.

you can easily get the common denominator by multiplying all of the denominators:

in this case, 9x7=63.

so you can rewrite the problem as:

(14/63)+(-27/63) = (14-27)/63 = -13/63

good luck!

Answer 2

Same answer I have also could be -0.2063