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Chapter 7 - XYZ Custom Plus

Chapter 7 - XYZ Custom Plus

Chapter 7 - XYZ Custom Plus

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444<strong>Chapter</strong> 7 Solving EquationsB Solve each equation by first finding the LCD for the fractions in the equation and then multiplying both sides of theequation by it. (Assume x is not 0 in Problems 39–46.) [Examples 5–7]31. ​ x _3 ​+ ​x _6 ​= 51032. ​ x _2 ​− ​x _4 ​= 31233. ​ x _5 ​− x = 4−534. ​ x _3 ​+ x = 8635. 3x + ​_1 2 ​= ​1 _4 ​36. 3x − ​_1 3 ​= ​1 _6 ​37. ​_x 3 ​+ ​1 _2 ​= −​1 _2 ​_−​ 1 12 ​ ​_ 1 6 ​ −338. ​ x _2 ​+ ​4 _3 ​= −​2 _3 ​−439. ​ 4 _x ​= ​1 _5 ​2040. ​ 2 _3 ​= ​6 _x ​941. ​ 3 _x ​+ 1 = ​2 _x ​−142. ​ 4 _x ​+ 3 = ​1 _x ​−143. ​ 3 _x ​− ​2 _x ​= ​1 _5 ​544. ​ 7 _x ​+ ​1 _x ​= 2445. ​ 1 _x ​− ​1 _2 ​= −​1 _4 ​446. ​ 3 _x ​− ​4 _5 ​= −​1 _5 ​5Solve each equation.47. 4x − 4.7 = 3.52.0548. 2x + 3.8 = −7.7−5.7549. 0.02 + 5y = −0.3−0.06450. 0.8 + 10y = −0.7−0.1551. ​_1 ​x − 2.99 = 1.02312.0352. ​_1 ​x + 2.87 = −3.017−41.1653. 7n − 0.32 = 5n + 0.560.4454. 6n + 0.88 = 2n − 0.77−0.412555. 3a + 4.6 = 7a + 5.3−0.17556. 2a − 3.3 = 7a − 5.20.3857. 0.5x + 0.1(x + 20) = 3.2258. 0.1x + 0.5(x + 8) = 75Find the value of x for each of the figures, given the perimeter.59. P = 36 x = 10 60. P = 30 x = 5xxx2x 3x 62x 261. P = 16 x = 5 62. P = 60 x = 10xxx2x 62x 4x 1

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