the sum of two numbers is 30 and their difference is 6. what are the two numbers
Answers
Answered by
21
Answer:
x = 18, y = 12
Step-by-step explanation:
Let the numbers be x, y.
As given,
x + y =30 --- ( 1 )
x - y = 6 --- ( 2 )
By ( 1 ) + ( 2 ) ,
( x + y ) + ( x - y ) = 30 + 6
2x = 36
x = 18
Thus, in ( 1 ) ,
x - y = 6
18 - y = 6
y = 18 - 6
y = 12
Therefore, x = 18, y = 12
tinamalik:
ya your answer is right
Answered by
2
Answer:
so the first no. is 17 and second is 13
Step-by-step explanation:
let one no. be =x
second no.be=y
according to the question,
x+y=30
x-y=6(we can take any one as greater than the other)
so from the first equation we take,
x+y=30
x=30-y
so we get the value of x
now we substitute the value of x in the second equation
x-y=6
30-y-y=6
30-2y=6
-2y=-26
y=-26/-2
y=13
now we know what is the value of y so from that we can say,
x+y=30
x+13=30
x=30-13
x=17
so the first no. is 17 and second is 13
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