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[2×8+20-12]÷6=4<10
2×[8+20-12÷6]=52>50
2×[8+20-12÷6]=52>50
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7. For the answer to be less than 10
{2×8+(20-12)}÷6
={16+8}÷6
=24÷6
=4
For the answer to be greater than 50
2×(8+20)-12÷6
=2×28-12÷6
=2×28-2
=56-2
=54
{2×8+(20-12)}÷6
={16+8}÷6
=24÷6
=4
For the answer to be greater than 50
2×(8+20)-12÷6
=2×28-12÷6
=2×28-2
=56-2
=54
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