marisol3957 marisol3957

29-11-2021
Mathematics

contestada

2x - 4y = 20
x/3 - y= 3
Solve by using substitution

Respuesta :

7302kzh04 7302kzh04

29-11-2021

Answer:

Step-by-step explanation:

2x-4y=20

y=-3+x/3

2x-4(-3+x/3)=20 ⇒ 2x+12-4x/3=20 ⇒ 2x/3+12=20 ⇒ 2x/3=8

x=12

y=1

2(12)-4(1)=20

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