Question

9+5=9,7+4=5,12+6=15 then 18+11=?​

Answer 1

Step-by-step explanation:

1. 9+5=9,7+4=5,12+6=15,then 18+11=?

Answer 2

Given:

9+5=9,

7+4=5,

12+6=15

To Find:

18+11=?​

Solution:

The series follows a combination of splitting the numbers -

First equation -

= ( 9 - 5 ) + ( 9 + 5 )

= ( 4 + 14 )

= 4 + ( 4 + 1 )

= 9

Second equation -

= ( 7 - 4 ) + ( 7 + 4 )

= ( 3 + 11 )

= ( 3 + 2 )

= 5

Third equation -

= ( 12 - 6 ) + ( 12 + 6 )

= ( 6 + 18 )

= ( 6 + 9 )

= 15

Similarly, fourth equation -

( 18 - 11 ) + ( 18 + 11 )

= ( 7 + 29 )

= ( 7 + 11 )

= 18

Answer: 18 + 11 = 18