Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\begin{aligned}9.8&\\ \underline{-9}&\end{aligned}$$

Answer

-1

Solution


Use a number line.
-1
0
1
2
3
4
5
6
7
8
Therefore, \(8-9=-1\).
\[-1\]
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