Question

simultaneous equation
3x-4y=10,4x+3y =5​

Answer 1

Answer:

3x-4y=10

4x+3y=5

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7x-y=15

7x=y+15

x=y+15/7

In first eq.

3(y+15/7)-4y=10

3y+45/7-4y=10

-y+45=70

-y=70-45

-y=25

y=-25

then y: –25

x: –10/7