Sum of 25

The Sum of two rational numbers is -2/3. If one of the numbers is 4/5, find the other.

Correct answer:

b =  -22/15

Step-by-step explanation:

s=−32​=−32​≐−0.6667 a=4/5=54​=0.8  a+b=s  b=s−a=3−2​−54​=15−10​−1512​=15−10−12​=15−22​=−1522​=−1157​=−1.4667

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