The difference between 2 numbers is 8. The sum of the two numbers is 20. Find the number.
2 answers:
Answer:
14, 6
Step-by-step explanation:
x-y =8 =>x=y+8
x+y=20
y+8 +y=20
2y=20 - 8
2y=12
y=12 :2
y=6 (the second number
x=6 +8 =14 (the first number
Answer:
The numbers are 6 and 14
Step-by-step explanation:
Let the two numbers be x and y
x-y = 8
x+y = 20
Add the two equations
x-y = 8
x+y = 20
-----------------
2x = 28
Divide by 2
2x/2 = 28/2
x = 14
Subtract the two equations
x-y = 8
-x-y = -20
-----------------
-2y = -12
Divide by -2
-2y/-2 = -12/-2
y = 6
The numbers are 6 and 14
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