Question

the difference between 2 numbers is 642. when the greater number is divided by the smaller number the quotient is 8 and the remainder is 19 find the number

Answer 1

Answer:

1. x-y=642
2. x=8y+19
3. substituting 2 in 1
4. 8y+19-y=642
5. 7y=642-19
6. 7y=623
7. y=89
8. substitute 7 in 2
9. x=8×(89)+19
10. x=712+19
11. x=731