Question

how many tens should be added to the result after subtracting 10 units from 42 tens for getting the sum five hundred?​

Answer 1

Answer:

Here, 9 tens should be added to the result after subtracting 10 units from 42 tens for getting the sum five hundred.

Step-by-step explanation:

Let the tens be x,

x × 10 + 42 × 10 - 10 = 500

10x + 420 - 10 = 500

10x + 410 = 500

10x = 500 - 410

10x = 90

x = 90/10

x = 9 (Ans)

Answer 2

Answer:

9 tens should be added to the result after subtracting 10 units from 42 tens for getting the sum five hundred.

=>x*10+42*10-10=500

=>10x+420-10=500

=>10x+410=500

=>10x=90

=>x=9