Math, asked by fazeenkhan236, 4 months ago

Please answer the question...
Step by step...
Its really very important for me.

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Answers

Answered by konkumuttisandeep

0

12a+(-19a)=-7a

-23b+(-12b)=-11b

30-17=13

Answered by muskanperween225

1

Step-by-step explanation:

(1) (12a-23b+30) + (12b-17-19a)

= 12a-23b+30+12b-17-19a

= 12a-19a-23b+12b+30-17

= -7a-11b+13

(2) (12b+15+10a)-(21a+3b-13)

= 12b+15+10a-21a-3b+13

= 10a-21a+12b-3b+15+13

= -11a+9b+28

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