Simplify the followings
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1)(14-7)*(16-(7+7-1))
ans. 7*(16-7-7+1)
=7*9-7+1
=7*3
=21
2. 2-(2+(2+2-2))
=0
3. 242÷(34-6*2)
=242÷34-12
=242÷22
=11
4. 20×(9-21÷(97-94))
=20×(-12÷3)
=20×-4
=-80
ans. 7*(16-7-7+1)
=7*9-7+1
=7*3
=21
2. 2-(2+(2+2-2))
=0
3. 242÷(34-6*2)
=242÷34-12
=242÷22
=11
4. 20×(9-21÷(97-94))
=20×(-12÷3)
=20×-4
=-80
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