4х + Зу = 3 4x - 2y = 18 How to solve this?

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LongNV asked Jul 26, 2023

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3 votes

4х + Зу = 3
4x - 2y = 18
How to solve this?

Mathematics
high-school

LongNV asked Jul 26, 2023

by LongNV

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1 Answer

13 votes

Using elimination, you can do

4x+3y-(4x-2y)=3-(18)

5y=-15

y=-3

Substitute it back into original equation:

4x+6=18

4x=12

x=3

So, the answer is x=3, y=-3

Burdui answered Jul 30, 2023

by Burdui

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So, the answer is x=3, y=-3

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