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Mathematics
Linda Ryan
3 December, 09:59
9 + b = - 12
q + (-9) = 12
+3
Answers (
1
)
Rylee Fuentes
3 December, 10:40
0
Subtract 9 from both sides
b = - 12 - 9
simplify - 12 - 9
Answer: b = - 21
9 + - 21 = - 12 is true.
simplify brackets
simplify q + - 9 to q - 9
add 9 to both sides
simplify 12 + 9 to 21
q = 21
21 + - 9 = 12 is true.
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