The value of x is 3.
7x - 3 = 2x +12
7x - 2x = 12 + 3
5x = 15
x = 3
Therefore the value of x is 3.
In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.
There are two kinds of equations:
- Identities and conditional equations. An identity is true for all values of the variables. A conditional equation is only true for particular values of the variables. An equation is written as two expressions, connected by an equals sign ("=").
- The real power of equations is that they provide a very precise way to describe various features of the world. (That is why a solution to an equation can be useful, when one can be found. )
- There are following three types of polynomial equations: Monomial Equations. Binomial Equations. Trinomial Equations.
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