MEGANHOLTZCLAW2 MEGANHOLTZCLAW2

15-09-2017
Mathematics

contestada

x = 3y - 6
2x - 4y = 8

Solve the system of equations using substitution.A)(-12,-2)
B)(15,7)
C)(21,9)
D)(24,10)

Respuesta :

texaschic101 texaschic101

15-09-2017

x = 3y - 6....so sub 3y - 6 in for x in the other equation

2(3y - 6) - 4y = 8
6y - 12 - 4y = 8
2y = 8 + 12
2y = 20
y = 20/2
y = 10

x = 3y - 6
x = 3(10) - 6
x = 30 - 6
x = 24

solution is (24,10)

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