3 years ago

Solve the system of equations by substitution. x+y=18 y=8x

Mathematics

2 answers:

stira [4]3 years ago

4 0

Answer:

Step-by-step explanation:

x + y = 18

y = 8x

x + 8x = 18

9x = 18

x = 18÷9

x = 2

Naddika [18.5K]3 years ago

3 0

Answer:

x=2, y=16

Step-by-step explanation:

x+y=18

y=8x

x+8x=18

x=2

y=16

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