To simplify the expression \((2b + 3r) + (4b + r)\), we can combine like terms.
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Combine the coefficients of \(b\):
- \(2b + 4b = 6b\)
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Combine the coefficients of \(r\):
- \(3r + r = 4r\)
Putting it all together, we have: \[ 6b + 4r \]
So the simplified expression is \(6b + 4r\).
The correct response is: 6b + 4r.