11. What must be subtracted from a’ - 4a + 5a - 6 to obtain a' - 2a +1?
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Answer:
3a-7
Step-by-step explanation:
To solve this, we need to subtract a-2a+1 from a - 4a + 5a - 6
= (a- 4a + 5a - 6)-(a-2a+1)
= a - 4a + 5a - 6 -a +2a -1
= a-4a+5a-a+2a-1-6
= 3a-7
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