Question

y=2x x+y=-18 how to solve using the substitution method ​

Answer 1

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Answer 2

Answer:

x = -6 , y = -12

Step-by-step explanation:

y=2x  ---------------equation 1

x+y=-18-------------equation 2

substitution y=2x in equation 2

x+2x=-18

3x=-18

x=-18/3

x=-6

Substitution x=6 in equation 1

y=2(-6)

y=-12