please solve the question step by step:-
( 4a + 2b - 7 ) - { ( a - b ) + ( 3a - 2b + 5 ) }
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Answer:
(4a+2b-7)-{a-b+3a-2b+5}
=(4a+2b-7)-{4a-3b+5}
=4a+2b-7-4a+3b-5
=5b-12
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