7 x 450 - 900 + 450 x 5
= 7 x 450 - 450 x 2 + 450 x 5
= 450 x (7 - 2 + 5)
= 450 x 10
= 4500
7 x 450 - 900 + 450 x 5
= 450 x 7 + 450 x 5 - 450 x 2
= 450 x (7 + 5 - 2)
= 450 x (12 - 2)
= 450 x 10
= 4500
7 x 450 - 900 + 450 x 5
= 7 x 450 - 450 x 2 + 450 x 5
= 450 x (7 - 2 + 5)
= 450 x 10
= 4500
7 x 450 - 900 + 450 x 5
= 450 x 7 + 450 x 5 - 450 x 2
= 450 x (7 + 5 - 2)
= 450 x (12 - 2)
= 450 x 10
= 4500