More or less solve it as if the inequality sign was an equals sign.
When solving for x, y=mx+b and y<mx+b are done the same way. You just end up with x< or > some number rather than x= some number.
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You can write an equivalent equation from a selected equation in the system of equations to isolate a variable. You can then take that variable and substitute it into the other equations. Then you will have a system of equations with one less equation and one less variable and it will be simpler to solve.
Inequalities have greater than, less than, greater than or equal to, or less than or equal to signs. Equations have an equal sign.
The unknown value of the variable could be greater, less or even equal to 12.50
equality does not change signs inequalities do for greater than or less than equations
When solving an equation, you are looking for a specific answer or answers. However, when solving inequalities, you are only looking for what an answer could be (for example, your answer could be less than 5 or greater than 32).