Fill in brackets in the following formula to make the equation hold 1.1.7x0.9 + 1.2 divided by 0.3-0.2 = 48.82.2.7x0.9 + 1.2 divided by 0.3-0.2 = 18.3 Thanks again 7x0.9 + 1.2 divided by 0.3-0.2 = 75 4.7x0.9 + 1.2 divided by 0.3-0.2 = 47.6

Fill in brackets in the following formula to make the equation hold 1.1.7x0.9 + 1.2 divided by 0.3-0.2 = 48.82.2.7x0.9 + 1.2 divided by 0.3-0.2 = 18.3 Thanks again 7x0.9 + 1.2 divided by 0.3-0.2 = 75 4.7x0.9 + 1.2 divided by 0.3-0.2 = 47.6

（7x0.9+1.2）/(0.3-0.2)=75

Add brackets to the following formula to make her calculate in the required order. 4 / 5 times 9 / 4 minus 3 / 4 divided by 3 / 4 plus 3 / 4
Subtraction → addition → multiplication → Division
Formula:
Division → subtraction → addition → multiplication
Formula:
Multiplication → addition → division → subtraction
The third one also needs to be formulated

4/5×(9/4-3/4)÷(3/4+3/4)
4/5×(9/4-3/4÷3/4+3/4)
4/5×9/4-3/4÷(3/4+3/4)

In the formula 6 × 4 + 18 ÷ 6 + 8, the minimum result is______ ．

To minimize the result of 6 × 4 + 18 △ 6 + 8, the formula becomes: (6 × 4 + 18) △ 6 + 8) = 42 △ 14 = 3

In a formula without brackets, if there are only operations of the same level, we should calculate them in turn; if there are two levels of operations, we should do () first and then ()

In an expression without brackets, if there are only operations of the same level, it should be calculated in turn (from front to back); if there are two levels of operations, it should be done first (multiplication and division), and then (addition and subtraction)