A situation equation follows the order of the story problem.
For instance:
Johnny has 8 apples, he eats some, and has 3 left.
The situation equation would be: 8 - a = 3
A solution equation is the equation that would help you find the solution. Your brain doesn't automatically know what "a" is, it has to rearrange the order of the equation and then solve.
The solution equation would be: 8 - 3 = a, then you would solve it.
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whats the difference between solving an inequality by algebriac vs graphical
Expression has no answer. a equation has an answer
undefined means you can not do the operation (5/0 is undefined) no solution refers to an equation not having an answer. a solution is a number which you can plug into the variable of an equation and get a true statement. So having no solution means there is no number which you can plug in and get a true statement. As a fraction is not an equation, but an expression it is not right to say that 5/0 has no solution. There is no variable in 5/0, nothing to plug into to get a true or false statement.
an equation has an equals sign.
An expression has no equal sign whereas an equation does have an equal sign