the unit digit of a two digit number is 3 and seven times the sum of the digit is the number itself find the number
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Answered by
0
Answer: Number =63
Step-by-step explanation:
Number =y×10+x
Given x=3
7(x+y)=10y+x...(1)
7(3+y)=10y+3
21+7y=10y+3
−3y=−18
y=6
Answered by
0
Answer:
Let the tens place be X .
the units place digits is 3 .
therefore - > Number = ( 10x + 3 )
Given
7 ( x + 3 ) = ( 10x + 3 )
7 x + 21 = 10x + 3
Therefore - > 10x - 7x = 21 - 3
= > 3 x = 18
or x = 6
using x = 6 in equation ( 1 ) ..
The number is 63 .
Step-by-step explanation:
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