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What is 2a - 9a?

Updated: 4/28/2022
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10y ago

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It is: -7a when simplified

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Q: What is 2a - 9a?
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What is 9a 3-2a?

9a +8 -2a -3 -5a = 2a +5


What is 9a plus 8-2a-3-5a?

9a +8 -2a -3 -5a = 2a +5


2a plus 5a plus 9a equals?

2a+5a+9a = 16a


What is 2a plus 3?

9a +8 -2a -3 -5a = 2a +5


How do you Factor the trinomial 2a squared - 9a-18?

(a - 6)(2a + 3)


What is 9a plus 3b-11a-4b?

9a + 3b - 11a - 4b = -2a -b


9a plus 8 minus 2a minus 3 minus 5a?

2a-5


Simplify 9a plus 8 minus 2a minus 3 minus 5a?

2a+5


Simplify 7a plus 2a plus 1?

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9a plus 15 equals 7a plus 9?

Collect like terms: 9a -7a = 9 - 15, ie 2a = -6, so a = -3


What are the values of a and b if 6 3 is the midpoint of the line joining 2a comma 2a-b to a-2b comma 4a plus 3b?

6 is the average of 2a and a - 2b so 12 = 2a + a - 2b = 3a - 2b3 is the average of 2a - b and 4a + 3b so 6 = 2a - b + 4a + 3b = 6a + 2bAdding the two equations gives: 18 = 9a so that a = 2Substituting for a in the first gives 12 = 6 - 2b so that b = -36 is the average of 2a and a - 2b so 12 = 2a + a - 2b = 3a - 2b3 is the average of 2a - b and 4a + 3b so 6 = 2a - b + 4a + 3b = 6a + 2bAdding the two equations gives: 18 = 9a so that a = 2Substituting for a in the first gives 12 = 6 - 2b so that b = -36 is the average of 2a and a - 2b so 12 = 2a + a - 2b = 3a - 2b3 is the average of 2a - b and 4a + 3b so 6 = 2a - b + 4a + 3b = 6a + 2bAdding the two equations gives: 18 = 9a so that a = 2Substituting for a in the first gives 12 = 6 - 2b so that b = -36 is the average of 2a and a - 2b so 12 = 2a + a - 2b = 3a - 2b3 is the average of 2a - b and 4a + 3b so 6 = 2a - b + 4a + 3b = 6a + 2bAdding the two equations gives: 18 = 9a so that a = 2Substituting for a in the first gives 12 = 6 - 2b so that b = -3


What is 9a-99?

9a-99 = -90