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2+5xi-3y=14+3x-5yi.Find x and y​

User Heatsink
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1 Answer

7 votes

Question:


5x-3y=14


3x-5y=2

Find x and y

Answer:


x = 4


y =2

Explanation:

Given


5x-3y=14 -- (1)


3x-5y=2 -- (2)

Required

Find x and y

We'll solve this using elimination method.

Multiply (1) by 3 and (2) by 5 to eliminate x

(
5x-3y=14) * 3

(
3x-5y=2) * 5

-------------------------------


15x - 9y = 42


15x - 25y =10

Subtract


15x - 9y = 42

- (
15x - 25y =10)

-----------------------


15x - 15x - 9y + 25y = 42 - 10


- 9y + 25y = 42 - 10


16y = 32

Make y the subject


y = (32)/(16)


y =2

Substitute 2 for y in
5x-3y=14


5x - 3 * 2 = 14


5x - 6 = 14

Collect Like Terms


5x = 14+6


5x = 20

Make x the subject


x = (20)/(5)


x = 4

User Sidonaldson
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