Let's simplify the expression step-by-step.
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Start with the first expression: \( 2a - 4b + 7 + 8a + 6b - 2 \).
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Combine like terms:
- For \(a\): \( 2a + 8a = 10a \)
- For \(b\): \(-4b + 6b = 2b\)
- For constants: \(7 - 2 = 5\)
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Putting it all together, we get: \[ 10a + 2b + 5 \]
So, the simplified form of \( 2a - 4b + 7 + 8a + 6b - 2 \) is \( 10a + 2b + 5 \).
The other expressions provided don't seem to relate to the simplification of the first one. However, from the simplification we performed, the final result is: \[ 10a + 2b + 5 \]