1. (-8c + d) - (-7c + 2d)
2.(5x - 7y) - (5x - 7y)
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1. (-8c + d) - (-7c + 2d)2.(5x - 7y) - (5x - 7y)
1. (-8c + d) - (-7c + 2d)
2.(5x - 7y) - (5x - 7y)
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Answer 1: − −
Answer 2: 0
Step-by-step explanation 1:
1. Distribute
( − 8 + ) − 1 ( − 7 + 2 )
( − 8 + ) + 7 − 2
2. Eliminate redundant parentheses
( − 8 + ) + 7 − 2
− 8 + + 7 − 2
3. Combine like terms
− 8 + + 7 − 2
− + − 2
4. Combine like terms
− + − 2
− −