Find two numbers with a sum of 20 and a difference of 6.
2 answers:
Answer:
13 and 7
Step-by-step explanation:
x + y= 20 -----(1)
x - y= 6 --------(2)
From equation 1,
x= 20-y
To substitute in equation 2, We say:
(20-y) - y=6
20 - 2y = 6
-2y = 6-20
2y = 14
Therefore, y = 7
To find x,
We substitute y in equation 1
Therefore, x + 7= 20
x = 20-7
Therefore x = 13.
This means the two numbers with a sum of 20 and a difference of 6 =
13 and 7.
Answer:
7 and 13
Step-by-step explanation:
x+y=20
x-y=6
2x=26, x=13, 13+7=20, 13-7=6.
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