do as directed?? please anyone give me answer
?? subtract
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Answer:
1. ab -bc +bc-ca = ab-ca Ans.
2.(8-9xy+3a-5x) -(3a-2x+5xy-7)
=8-9xy+3a-5x-3a+2x-5xy+7
=8+7-9xy-5xy+3a-3a-5x+2x
=15-14xy-3x Ans.
Answered by
1
1) ab - bc + bc - ca
= ab - ca
2) (8 - 9xy + 3a - 5x) - (3a - 2x + 5xy - 7)
8 - 9xy + 3a - 5x - 3a + 2x - 5xy +7
8 + 7 - 9xy - 5xy + 3a - 3a - 5x + 2x
15 - 14xy - 3x
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