Adding (or subtracting) the same number or the same algebraic expression on both sides of the equation is equivalent to changing the sign of some items in the equation and moving them from one side of the equation to the other. This deformation is called a shift term.
For example: x+ 1=2. Move 1 on the left side of the equation to the right, which is x=2+(- 1). Or x=2- 1.
For example: x- 1=2. Move 1 on the left side of the equation to the right, which is x=2+(+ 1). Or x=2+ 1.
Extended data:
The solution of one-dimensional linear equation;
(1) denominator: both sides of the equation are multiplied by the least common multiple of each denominator;
(2) bracket removal: first remove the bracket, then remove the bracket, and finally remove the braces;
(3) Move the term: move all terms containing unknowns to one side of the equation and all other terms to the other side of the equation;
(4) merging similar terms: transforming the equation into the form of ax=b(a≠0);
(5) The coefficient becomes 1.
The basis of solving equations
1. Move terms and symbols: move some terms in the equation from one side to the other with the previous symbols, and add, subtract, multiply and divide with the variation;
2. Basic properties of the equation.