Please help! 20
Points.

The property used in line A is the commutative property

This is the idea of adding can be done in any order, eg: 2+3 = 3+2 = 5

For this problem, 2x-20+x turns into 2x+x-20. Think of 2x-20 as 2x+(-20).

The property you would use after line B is the addition property of equality

This rule says that if a = b, then a+c = b+c. In words: we can add any number to both sides of any equation. In this case, we would add 20 to both sides to undo the "-20" on the left side.

pakistan's principal natural resources are arable land and water. about 25% of pakistan's agriculture accounts for about 21% [1] of gdp and employs about 43% of the labour force. in pakistan, the most agricultural province is punjab where wheat and cotton are the most grown.