Question

4.51.7+2.86.7+2.7.12

Answer 1

4 . 51 . 7 + 2 . 86 . 7 + 2 . 7 . 12

= ( 4 . 51 ) . 7 + ( 2 . 86 ) . 7 + ( 2 . 12 ) . 7

= 204 . 7 + 172 . 7 + 24 . 7

= 7 . ( 204 + 172 + 24 )

= 7 . 400

= 2 800

Answer 2

2800