1.

12. How much is o greater than -ab + 3a - 4b?

Answer»

3a-4b-c+6-(2a-5b+2c-9)

=3a-4b-c+6-2a+5b-2c+9

=a+b-3c+15

3a-4b-c+6-(2a-5b+2c-9)=3a-4b-c+6-2a+5b-2c+9=a+b-3c+15 is the right answer

option (2) is the right answer this



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