Posted by **tish** on Monday, April 25, 2011 at 11:46am.

(12x + 5t)-(14t-6x)

12x + 5t - 14t -6x ( I get lost here when the -6x changes to +6.

Same as this question:

(5x + 2z)-(2x - 11z)

Can anyone explain this to me? Thank you

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