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Q: What is 7a plus 8b times 2 if a equals 3 and b equals 4?

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8b = -65 so b = -8.125

8b = e - 12n, possibly.

It is: a(7a-8b)

6a + (7b - 4a - 8b) = (6a - 4a) + (7b - 8b) = 2a - b

That's an equation in which b = -1

One of the factors is 3x + 8b. The other is 9x^2 -24xb + 64b^2

Clearly, there are some signs missing. So let's try the four possibilities for the second terms: 1. + and + 3a + 4b = 7a + 4b Subtract 4b from each side: 3a = 7a Subtract 3a from each side: 0 = 4a Answer : a = 0, b indeterminate (ie can have any vaue). 2. + and - 3a + 4b = 7a - 4b Subtract 4b from each side: 3a = 7a - 8b Subtract 7a from each side: -4a = -8b or 4a = 8b Answer: a = 2b 3. - and - 3a - 4b = 7a - 4b Add 4b to each side: 3a = 7a Subtract 3a from each side: 0 = 4a Answer : a = 0, b indeterminate (ie can have any vaue). 4. - and + 3a - 4b = 7a + 4b Add 4b to each side: 3a = 7a + 8b Subtract 7a from each side: -4a = 8b or 4a = -8b Answer: a = -2b Can't do better than that with the information available.

b^2 + 8b + 7 factors to (b + 7)(b + 1)

13b !

8b

22b + 3

5b2 = 8b therefore 5b =8 therefore b = 1.6

11a+11b

-28am + 17b

8b -2a

8b^2 -9b +1 8b^2 -8b -b +1 8b(b-1) - 1(b-1) (8b-1)(b-1)

8b + 11 - 3b = 2b + 2 5b + 11 = 2b + 2 5b - 2b = 2 - 11 3b = -9 b = -3

It is 17b when simplified

24b

2(a + 4b)

6c you nerds out there and the next one is 6b,6a,7c,7b,7a,8c,8b,8a and so on

(8b + 7)(7b + 9)

(8a)(8b) = (8c)/(8d); multiply both sides by 8d to obtain (8a)(8b)(8d) = (8c); divide both sides by 8 to obtain (8a)(8b)d = c; divide both sides by (8a)(8b) to obtain d = c/[(8c)(8b)].

With the factor 4a plus 8b 16c you can find the answer and check it mentally. You would first have to find he product of all the numbers to find the value of the letter A.

If you mean 8b+4b = 56-16b then the value of b works out as 2