The sum of three rational numbers is −15.If two numbers are −25 and 310, then find the third number.
810
110
−110
−210
Let the unknown number be x.
−15=310+−25+xx=−15−310+25 Taking LCM, we get,x=−210−310+410x=−110
The sum of three rational numbers is −15.If two numbers are −25 and 310, then find the third number.