littlebrainer1791 littlebrainer1791

05-02-2021
Mathematics

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Solve the system of equations by substitution.
3x + 4y - 12
x + 7y = 8

Respuesta :

asmaNasr asmaNasr

05-02-2021

Step-by-step explanation:

[tex]3x + 4y = 12 \\ x + 7y = 8 \\ x = 8 - 7y \\ 3(8 - 7y) + 4y = 12 \\ 24 - 21y + 4y = 12 \\ 12 = 17y \\ y = 0.705 \\ x = 8 - 7(0.705) = 3.065 = 3.07[/tex]

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