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Noteables Interactive Study Notebook (26491.0K) - McGraw-Hill ...

Noteables Interactive Study Notebook (26491.0K) - McGraw-Hill ...

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12–5EXAMPLE Solve a Multiplication EquationREVIEW ITWhy is it useful to dividea negative coefficientby a negative integerin solving Example 2?(Lesson 11–6)Solve -5b = 15.-5b = 15 Write the equation.-5b __ 15Divide each side by .__ =b = -5 ÷ (-5) = and 1b = bThe solution is. Check this solution.Check Your ProgressSolve -3t = 21. Check your solution.EXAMPLEGEOMETRY The area of a rectangle is 144 square inches,and the width is 4 inches. Write an equation to find thelength of the rectangle and use it to solve the problem.Use the formula area = length × width.Copyright © Glencoe/<strong>McGraw</strong>-<strong>Hill</strong>, a division of The <strong>McGraw</strong>-<strong>Hill</strong> Companies, Inc.HOMEWORKASSIGNMENTPage(s):Exercises:A = wl144 in 2 4 in.Write the equation.144 = 4l Replace w with 4._ 144 4l= _ Divide each side by .= l Simplify.The length of the rectangle is .Check Your Progress GEOMETRY The area of arectangle is 126 square feet and the width is 7 feet. Write anequation to find the length of the rectangle and use it to solvethe problem.Math Connects, Course 1 303

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