SOLUTION: find two numbers whose sum is 21 and the difference is 9

SOLUTION: find two numbers whose sum is 21 and the difference is 9

Algebra.Com

Question 1139851: find two numbers whose sum is 21 and the difference is 9
Answer by dkppathak(439) (Show Source): You can put this solution on YOUR website!
find two numbers whose sum is 21 and the difference is 9
let two numbers are x and y
x+y=21
x-y=9
by solving both equation
2x=30
x=15
y=6
both number are 15,6
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