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shepuryov [24]
2 years ago
15

Please help, i have no idea what i did wrong. 20 points !

Mathematics
1 answer:
tresset_1 [31]2 years ago
6 0

Answer:Second Step

Step-by-step explanation:

On the right side in step two you added -3b-15b, and ended up with -12b. This is incorrect. -3b-15b is actually -18b

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