0
Anonymous
it would be 30mplus negative 7
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12m + 9n - 4 - 10m + 6n = 2m + 15n - 4
(3+2) (4+48)
30m-7
Identify the law illustrated by: 12m + 0 is the same as 12m.
It is: 4(2x+3m) when factorised