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Subjects>Math>Algebra

Solve 21 equals 13 minus 2b?

Anonymous

∙ 16y ago

Updated: 4/28/2022

This is the same as:

13-2b = 21

-2b = 21-13

-2b = 8

b = -4

Wiki User

∙ 16y ago

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Solve x plus 7 divided by x minus 2 equals x plus 4 divided by x minus 3?

x + 7 / x - 2 = x + 4 / x - 3(times both sides by x - 3 and x - 2)(x + 7)(x - 3) = (x + 4)(x - 2)x2 + 7x - 3x - 21 = x2 + 4x - 2x - 8x2 + 4x - 21 = x2 + 2x - 8(- x2 from both sides)4x - 21 = 2x - 8(- 2x from both sides)2x - 21 = -8(+ 21 on both sides)2x = 13(divide both sides by 2)x = 6.5

Square root of 441?

plus or minus 21

Solve this inequality j4 - 8 4?

Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals".

How do you solve the quadratic equation t2 4t equals 21 by factoring?

Subtract 21 from both sides. If that's + 4t, the answer is (t - 3)(t + 7) and t = 3, -7 If that's - 4t, the answer is (t + 3)(t - 7) and t = -3, 7

What is bigger 13 15 or 21 25?

13/15 = 65/75 21/25 = 63/75 13/15 is bigger.

Related Questions

How do you solve 4n plus 13 equals n minus 8?

As follows:- 4n+13 = n-8 4n-n = -8-13 3n = -21 n = -7

What is 13 out of 21?

I presume you don't mean 21 minus 13; that is easy enough, and equals 8. If you mean the ratio 13/21, all you do is divide. The answer is 0.1690___.

How do you solve 3x minus 6 equals 21?

3x-6 = 21 3x = 21+6 x = (21+6)/3 x = 9 You shouldn't ask us to solve your math homework.

Solve the equation x plus 13 equals -8?

5

How do you solve 4n minus 7n equals 21?

4n - 7n = 21(4-7) n =21-3n = 21divide both sides by -3n = -7

What is the answer to 16 over 21 minus 2?

16/21 minus two equals -1 5/21

What is 25 plus 16 minus 13 minus 21 equal to?

25 + 16 - 13 - 21 = 7

What equals 21 minus 12?

9

Four thirds minus five sevenths?

4/3 minus 5/7 = 13/21

How do you solve 2 x minus 5 equals 16?

you add the 5 to both sides of the equation and you have 2x=21 and then you divide by 2 so you have x=11

What is 13-8?

21

4 over 7 plus parenthesis minus 1 over 3 parenthesis equals?

13/21 - 7/21 = 6/21 Sorry, DJ, 4 over 7 = 12/21 so answer is 5/21

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