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How do you work out b plus 9 equals 21? - Answers

b + 9 = 21 Take the + 9 across the other side of the equals sign. a plus becomes a minus. b = 21 - 9 so... b = 12. This can be checked by setting b to 12 in the first equation b + 9 = 21 12 + 9 = 21 which is correct.



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How do you work out b plus 9 equals 21? - Answers

https://math.answers.com/math-and-arithmetic/How_do_you_work_out_b_plus_9_equals_21

b + 9 = 21 Take the + 9 across the other side of the equals sign. a plus becomes a minus. b = 21 - 9 so... b = 12. This can be checked by setting b to 12 in the first equation b + 9 = 21 12 + 9 = 21 which is correct.



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https://math.answers.com/math-and-arithmetic/How_do_you_work_out_b_plus_9_equals_21

How do you work out b plus 9 equals 21? - Answers

b + 9 = 21 Take the + 9 across the other side of the equals sign. a plus becomes a minus. b = 21 - 9 so... b = 12. This can be checked by setting b to 12 in the first equation b + 9 = 21 12 + 9 = 21 which is correct.

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      b + 9 = 21 Take the + 9 across the other side of the equals sign. a plus becomes a minus. b = 21 - 9 so... b = 12. This can be checked by setting b to 12 in the first equation b + 9 = 21 12 + 9 = 21 which is correct.
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