angelmariewelch15 angelmariewelch15

28-01-2021
Mathematics

contestada

Solve the system by substitution.
y=6x
y=3x+21
( , )

Respuesta :

jaslinmaldonado jaslinmaldonado

28-01-2021

Answer:

(7,42)

Step-by-step explanation:

Imput the 6x for the Y:

6x=3x+21

move the variable to the left

6x-3x=21

collect like terms:

3x=21

divide both sides by 3x and youll get this for X

x=7

Imput x=7 into the equation

Y=6x7

solve:

y=42

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