Insert brackets into the following to make the equations correct:

1. \( 27 - 4 + 2^2 \div 4 = 18 \)

2. \( 4 \times 2 + 3 - 1 = 19 \)

3. \( 4 = 3^2 + 1 \div 5 = 6 \)

4. \( 3 + 2 \times 6 - 3 = 27 \)

5. \( 7 + 4 - 9 \div 3 = 8 \)

6. \( 6 \div 2 + 4 \times 2 = 11 \)

7. \( 3 = 1^2 \div 4 = 4 \)

8. \( 12 + 20 \div 4^2 = 2 \)

9. \( 7 + 7 - 18 \div 6^2 = 23 \)

for the first one: i don't know...i think it can't be done. for the second one, it is : 4 × (2 + 3) - 1 = 19 for the third one, it is 4 + ((3² +1) ÷ 5) = 6 for the fourth one, it is : (3 + 2) × 6 - 3 = 27 for the fifth one, it is : 7 + 4 - (9 ÷ 3) = 8 for the sixth one, it is : (6 ÷ 2) + (4 × 2) = 11 for the seventh one, it is : (3 + 1)² ÷ 4 = 4 for the eight one, it is : (12 + 20) ÷ 4² = 2 for the ninth one, it is : 7 + (7 - 18 ÷ 6)² = 23

Answered by rabinshrestha41 | 2024-06-24

Insert brackets to modify the equations allows some to yield correct results. The adjustments work for equations 1, 2, 4, 5, and 6 while others are invalid. Some equations cannot be adjusted to be correct under standard arithmetic rules.
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Answered by rabinshrestha41 | 2024-12-09