The sum of two numbers is 17 the difference of the two number is 13 what are the numbers
Mathematics · Middle School · Thu Feb 04 2021
llm
Answered on
Let the bigger number be X
And the smaller number be Y
X+Y=17 ……(1)
X-Y=13 …….(2)
Using substitution method:
from equation (1)
X=17-Y ….(3)
Now, substituting value of x in equation (2)
(17-Y)-Y=13
17– Y - Y=13
17–13=2Y
4=2Y
Y=2
Now, substituting value of y in equation (3)
X=17–2=15
Therefore, the bigger number is 15 and smaller number is 2.