On the sign of inequality That is to say, multiplication or division of a negative number on both sides of an inequality requires a sign change, for example, negative half a > - 1. I remember the teacher said that negative should be changed, but our classmates said that it would not change, and it was right to do it, and - one in a

On the sign of inequality That is to say, multiplication or division of a negative number on both sides of an inequality requires a sign change, for example, negative half a > - 1. I remember the teacher said that negative should be changed, but our classmates said that it would not change, and it was right to do it, and - one in a

When a negative number is multiplied by a real number, the sign of the real number changes, no matter what
If the two sides of an inequality are multiplied by negative numbers, the inequality sign should be changed, that is, the greater than sign should become the less than sign, and so on

How to shift the term of equation 1-x = 3-2x, move the unknowns to the left, move the constants to the right, and when to change the sign?

1-x = 3-2x, just move the term directly
2x-x=3-1
x=2
I understand. Please accept,
If you have any new questions, please ask for help,

The mixed operation process of rational number addition and subtraction
0 - (+ 1 / 6) - (- 1 / 4) - (+ 1 / 3) - (- 1 / 2)=
（-38）-（-21）-｛（-50）-【（-70）-（-38）-（-28）】｝=

0-(1/6)-(1/(-4))-(1/3)-(1/(-2)) = 0.25
(-38)-(-21)-((-50)-(-70)-(-38)-(-28)) = -103