edendunham24601 edendunham24601

26-02-2020
Mathematics

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X=2y-4, 5x-6y=-8 I need to solve this using the substitution method

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gcantiga44 gcantiga44

26-02-2020

Answer:

x = 2

y = 3

Step-by-step explanation:

x = 2y - 4

5x - 6y = -8

Substitute for x.

5(2y - 4) - 6y = -8

10y - 20 - 6y = -8

4y - 20 = -8

4y = -8 + 20

4y = 12

y = 12 ÷ 4

y = 3

x = 2y - 4

x = 2(3) - 4

x = 6 - 4

x = 2

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