If two numbers 12 and - 18 are known, then the absolute value of the sum of the two numbers is [], and the sum of the absolute values is []

If two numbers 12 and - 18 are known, then the absolute value of the sum of the two numbers is [], and the sum of the absolute values is []

6,30

Absolute value of 3-4 + (- 5-8) - absolute value of positive five - (5-20)

Absolute value of 3-4 + (- 5-8) - absolute value of positive five - (5-20)
=1-13-5+15
=-2

The absolute value of [- 4] multiplied by [- 8] minus [negative 5] multiplied by negative 7 is equal to?

Original form
=4×8-（-5）×7
=32+35
=67
Your adoption is the driving force of my answer!

Fill - 1, + 2, - 3, + 4, - 5, + 6, - 7, + 8, - 9 in the box, so that the three numbers on each diagonal of each row and column satisfy that the product is negative, and the sum of absolute values
Fill - 1, + 2, - 3, + 4, - 5, + 6, - 7, + 8, - 9 in the box, so that the three numbers on each diagonal line of each row and column meet the following requirements:
(1) The product of three numbers is negative;
(2) The sum of the absolute values of three numbers is equal
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8 -1 6
-3 -5 -7
4 -9 2