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salantis [7]
3 years ago
15

What reason is incorrect?

Mathematics
1 answer:
Alika [10]3 years ago
6 0

Answer:

A) addition

Step-by-step explanation:

4x + 5x + 12 = -6 (given) this is the given info

9x + 12 = -6 (simplify) to simplify, combine like terms, 4x + 5x = 9x

9x = -18 (subtraction) you are subtracting 12 from both sides to cancel out 12

x = -2 (addition) you are not adding, you are dividing by 9 to get x alone

you are not adding

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