zach002 zach002

08-03-2019
Mathematics

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Substitution for the problem

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choixongdong choixongdong

08-03-2019

Answer:

Solution (-9 , 5)

Step-by-step explanation:

2x + 9y = 27

x - 3y = -24 ---> x = 3y - 24

Substitute x = 3y - 24 into 2x + 9y = 27

2(3y - 24) + 9y = 27

6y - 48 + 9y = 27

15y = 75

y = 5

x = 3y - 24

x = 3(5) - 24

x = -9

Solution (-9 , 5)

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