Solving an Equation In Exercises 23–36, solvethe equation and check your solution. (If not possible,explain why.)23. 2(x + 5) − 7 = x + 924. 7(x − 4) = 1 − (x + 9)25. x5 − 3 = x3+ 1 26. 3 +2x − 5 = 2xx − 5

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.