Answer:
-13/35
Explanation:
4/5 + x = 3/7
subtract both sides by 4/5
x =
find the common denominator of 5 and 7
x = -13/35
multiply each side of equation by LCD of 5 and 7 (which is 35) to eliminate fractions
you get, 28 + 35x = 15
35x = -13
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