a two digit number is 3 more than 4 times the sum of its digits.if 18

1.	a two digit number is 3 more than 4 times the sum of its digits.if 18 is added to the number it's digits are interchanged find the number
Answer» Step-by-step explanation: 10x+y=4(x+y)+3 10x+y+18=10y+x 10x+y=4x+4y+3 6x-3y-3=0 2x-y-1=0----1 9x-9y+18=0 x-y+2=0------2 1-2 2x-y-1=0 -(x-y+2)=0 2x-y-1=0 -x+y-2=0 =x-3=0-->>x=3 30+y=4(3+y)+3 30+y=12+4y+3 30+y=15+4y 15=3y y=5 number =35 please MARK my ANSWER as BRAINLIEST it's very NEEDED for me

a two digit number is 3 more than 4 times the sum of its digits.if 18 is added to the number it's digits are interchanged find the number

Answer»

Step-by-step explanation:

10x+y=4(x+y)+3

10x+y+18=10y+x

10x+y=4x+4y+3

6x-3y-3=0

2x-y-1=0----1

9x-9y+18=0

x-y+2=0------2

1-2

2x-y-1=0

-(x-y+2)=0

2x-y-1=0

-x+y-2=0

=x-3=0-->>x=3

30+y=4(3+y)+3

30+y=12+4y+3

30+y=15+4y

15=3y

y=5

number =35

please MARK my ANSWER as BRAINLIEST it's very NEEDED for me