Example

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

Question

$$4.5\times2-8+18\div3$$

Answer

8

Solution


Simplify  \(5\times 2\)  to  \(10\).
\[10-8+\frac{18}{3}\]
Simplify  \(\frac{18}{3}\)  to  \(6\).
\[10-8+6\]
Simplify  \(10-8\)  to  \(2\).
\[2+6\]
Simplify.
\[8\]
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