Question

1 (1+ 2) + 3(1 + 2) = ( 1 + 3 ) ( 1 + 2 )
WHY ?

Answer 1

Answer:

common out (1+2)

then (1+3) will remain

if we solve 1(1+2)+3(1+2)=(1+3)(1+2) means we will get same answer.

1+2+3+6=1+2+3+6

12=12

then 1(1+2)+3(1+2)=(1+3)(1+2)