The equal symbol (=) connects the two sides of the equation expression. 2x+1 is the left-hand side (LHS) of the equation, and 9 is the expression's right-hand side (RHS). The LHS value is equal to the RHS of the expression, as shown by the equal sign between LHS and RHS.
It is not an equation when 10x + 63 > 10. The expression's sign between the LHS and RHS in this case is not equal. We can therefore claim that not every expression is an equation. Linear inequalities are a class of expressions that fit this description.
- 3x + (4 -1) = 4x
- 3x - 4x = - 3
3x + 4x = 3
7x = 3
3/7 = x
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