Question

sum of the two numbers is 36.if 9 is subtracted from 8 times the first number, we get second number.​

Answer 1

Answer:

The first number will be 5 and

the second number will be 31.

Step-by-step explanation:

Let the first number be x and the second be y.

Hence, the first eqaution will be,

= x + y = 36. (given) (i)

the second eqaution will be,

= 8(x) - 9 = y. ( given)

= 8x - y =9 ; (ii)

Sum up the eqautions;

= (x + y) + (8x - y) = 36 + 9;

= x + y + 8x - y= 36 + 9;

Here, y will cancel out and we get,

= x + 8x = 45;

= 9x = 45;

= x = 45 / 9;

= x = 5

Now, y will be;

= x + y = 36;

= 5 + y = 36;

= y = 36 - 5;

= y = 31.

Therefore, the first number(x) will be 5 and the second(y) number will be 31.

Answer 2

Answer:

Step-by-step explanation:

let the numbers x and y

x+y=36

8x-9=y

substitute in x+y=36

x+8x-9=36

9x-9=36

x-1=4

x=5

y=8*5-9=40-9=31