Question
9b – 4b + 3b = 16
✓
Answer
$\begin{aligned} & 9 b-4 b+3 b=16 \\ & \Rightarrow(9-4+3) b=16 \\ & \Rightarrow 8 b=16 \\ & \Rightarrow b=\frac{16}{8}=2 \\ & \therefore b=2\end{aligned}$
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