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The expression 2a - 9a is a subtraction problem involving two terms with the variable 'a'. To solve this, you need to combine the coefficients of 'a'. In this case, 2a - 9a simplifies to -7a. This is because you are subtracting 9a from 2a, which results in -7a.
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What is 9a plus 8-2a-3-5a?
9a +8 -2a -3 -5a = 2a +5
How do you change 9a into a verbal expression?
9a verbal expression
How do you factor 0 equals -1a2-18-9a?
-a^2- 9a - 18 = 0 -(a^2 + 9a + 18) = 0 -(a + 6)(a + 3) = 0
What is 3a plus 4b plus 6a plus 3b in algebra?
9a + 7b *remember to look and understand the letters!*
What is 2a plus 2a?
4a
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?
9a + 1
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
