Answer:
57 x 457 x 4.3 = 10 x (5.7 x 4.3) = 10 x 24.51 = 245.1
Step-by-step explanation:
If we look closely at the two equations you will see the following...
57 x 4.3 = 10 x (5.7 x 4.3)
(Since we know what 5.7 x 4.3 equals to we just substitute the value of 24.51 and get...)
57 x 4.3 = 10 x 24.51
57 x 4.3 = 245.1
