Question

please answer it by putting numbers of questions and worksheet also(ex: Worksheet 1 question 1)...I Need it immediately..

Answer 1

Answer:

x = 471/990

b = 15

x + y = 8

Step-by-step explanation:

x = 0.475  ( bar on 75)

x = 0.475757575......

multiplying by 10 on both sides

10x = 4.75757575 ....

1000x = 475.75757575.....

10x = 4.75  ( bar on 75)

1000x = 475.75  ( bar on 75)

1000x  - 10x  = 475.75  ( bar on 75) - 4.75  ( bar on 75)

=> 990x = 471

=> x = 471/990

3x + 5y = b

x = 5 & y = 0 is solution

=> 3(5) + 5(0) = b

=> 15 + 0 = b

=> b = 15

Let say number is xy  => value = 10x + y

reversing digit number yx => value = 10y + x

10x + y + 10y + x = 88

=> 11x + 11y = 88

=> x + y = 8