Example

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

Question

$$\cdot-16-(-9)1$$

Answer

-*16+9

Solution


Simplify negative sign.
\[-\times 16-(-9)\times 1\]
Simplify  \((-9)\times 1\)  to  \(-9\).
\[-\times 16-(-9)\]
Remove parentheses.
\[-\times 16+9\]
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