Suhana said, "multiplying my number by 5 and adding 8+
same answer as subtracting my number from 20".
Find Suhana's numbers.
Answers
Answered by
9
Step-by-step explanation:
Let Suhana' number be x
And the answer obtained be y
Then, According to the first given condition,
5x+8=y
5x-y+8=0............(1)
20-x=y
x-y+20=0
x+y-20=0
x=20-y.........(2)
5(20-y)-y+8=0
100-5y-y+8=0
6y=108
y=108/6
y=18........(3)
thus,
x+18=20
x=2
Suhana's number is 2
Answered by
1
Answer:
Number is 2
Step-by-step explanation:
Let the number be x
x*5+8=20-x
5x+8=20-x
5x+x=20-8
6x=12
x=2
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