Example

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

Question

$$124-(12-2)\times9\times(18+2)-$$

Answer

124-10*9*20-

Solution


Simplify  \(12-2\)  to  \(10\).
\[124-10\times 9\times (18+2)-\]
Simplify  \(18+2\)  to  \(20\).
\[124-10\times 9\times 20-\]
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