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From Equation 1: x = 3y - 23

Substitute for x in equation 2: 5(3y - 23) + 6y = 74

ie 15y - 115 + 6y = 74

ie 21y - 115 = 74

Add 115 to each side: 21y = 189

Divide each side by 21: y = 9

x = 3y - 23 ie 27 - 23 ie 4

x = 4, y = 9

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โˆ™ 2010-05-19 19:33:40
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Q: How do you Solve the system of equations using the substitution method Enter the answer as an ordered pair x - 3y equals -23 5x plus 6y equals 74?
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