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notsponge [240]
3 years ago
14

4x-8y=1214+2x=-6yplz help​

Mathematics
1 answer:
sesenic [268]3 years ago
4 0

Answer:

x=2.7142 y=-2.8571,

Step-by-step explanation:

given 4x-8y=12............(1)

14+2x=-6y

2x+6y=-14..........(2)

from equ (2) multiply by 2

4x+12y=-28............(3)

substruct (1) and (3)

4x-8y-4x-6y=12-(-28)

-14y=40 ,y=\frac{40}{-14}=-2.8571

y=-2.8571 put in equ (1)

4x-8(-2.8571)=12

4x=12-22.857=10.8571

x=\frac{10.8571}{4}

x=2.7142

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