There are infinite equivalents for each of the expressions, for example:
50-10 =
= 60 - 20
= 30 + 10
= 10 + 30
= 1/3 120
42 + 18 =
= 78 - 18
= 100 - 40
= 59 + 1
= 2 30
24x - 8x =
= 8x + 8x
= 1x + 15x
= \(\frac{32x}{2}\)
= 20x 4/5
5n + 15n =
= 25n - 5n
= \(\frac{60n}{3}\)
= 10n + 10n
= 2 10n
4 (2 + 7p) =
= 4 2 + 4 7p
= 8 + 28p
= 4 (7p + 2)
= 4 7p + 8
3 (6m + 3) =
= 3 6m + 3 * 3
= 18m + 9
= 3 (6 + 6m - 3)
= 6 (3m + 1 1/2)
