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22\times 30=78-28+40
Add 11 and 11 to get 22.
660=78-28+40
Multiply 22 and 30 to get 660.
660=50+40
Subtract 28 from 78 to get 50.
660=90
Add 50 and 40 to get 90.
\text{false}
Compare 660 and 90.
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