SOLUTION: I need help with a math problem. Subtract. (-2a+6b-c)-(-3b+6c-6d)

Question 362612: I need help with a math problem.
Subtract. (-2a+6b-c)-(-3b+6c-6d)
Found 2 solutions by checkley77, HasanSahin:
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
(-2a+6b-c)-(-3b+6c-6d)
-2a+6b-c+3b-6c+6d
-2a+9b-7c+6d ans.
Answer by HasanSahin(52) (Show Source): You can put this solution on YOUR website!
(-2a+6b-c)(-3b+6c-6d)
You have to make the minus sign(-) positive(+) between 2 blocks while dealing with two separate blocks in brackets.You have to multiply the signs of the terms inside the second block with (-) so every single term's sign will change to opposite sign such
as (-)*(-) = (+) and (-)*(+) = (-) and (+)*(+) = (+)
Now the total expression looks like now:

Now you can remove brackets because you made the minus sign plus between blocks.

Sum them up;

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