gabbyasmith12 gabbyasmith12

31-01-2020
Mathematics

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

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brshaundaniel brshaundaniel

31-01-2020

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chidinmakpaduwa chidinmakpaduwa

31-01-2020

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

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