3 years ago

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

Mathematics

1 answer:

Dimas [21]3 years ago

6 0

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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