Solve the system of equations. 3x 7y = 5 9y = 5x 5 A. ( 3, 2) B. (8, 5) C. ( 10, 5) D. (0, 0)
15x - 35y = 25 , 9y = 5x + 5 is equal to: (–10, –5). 3x – 7y = 5 multiple 5 on both sides: 15x - 35y = 25 (equation 1) 9y = 5x + 5, multiple 3 on both sides: 27y = 15x + 15, [ rearrange the equation: 15x - 27y = -15 (equation 2) Equation 1 - equation 2 the result is: -8y = 40 y = -5 3x – 7(-5) = 5; 3x = 5 - 35 = -30 x = -10 The solution for the system of equations 3x – 7y = 5 9y = 5x + 5 is (–10, –5). ]
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Asked 12/8/2018 11:18:55 AM
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