B. Perform the indicated operations.

1.(54+9) - 2 +8 =
2.17 + 21÷3 × 2 =
3.12 - 3 + 18 ÷ 3 × 2 =
4.35 ÷ (2+3 - 7 + 9 =
5.{(12 - 3) + (18 ÷ 3)} × 2=​

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