What should be added to 7a – 9b + 10c to get 9a + b – 3c.
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Answer:
13
Step-by-step explanation:
= 7a - 9b + 10c + 9a + b - 3c
= 7-9 + 10 + 9-3
= -3 + 10 + 6
= -3 + 16
= -13 This is answer
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