Simplify the expression. 1. 5x – 2(x + 3) Solve and Check. 2. m 8− 3 = 4 For each equation, use a model to solve. Write the algebraic procedure you followed to solve. Use the Key below to model your equations. x = –x = 1 = –1 = 3. 3(x – 2) = –9 Equation Model (Both Sides) Work w/ Algebra = = =

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.