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SlowZasob
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
= [tex] \frac{32x}{2} [/tex]
= 20x * 4/5

5n + 15n =

= 25n - 5n
= [tex] \frac{60n}{3} [/tex]
= 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)

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