Question

Solve each of the following pairs of equations by the elimination method.
1. 8x+ 5y = 9
3x+2y = 4

2.2x+3y=8
4x + 6y=7

3.3x+4y=25
5x-6y=-9​

Answer 1

see all the attachments...

Answer 2

Step-by-step explanation:

1) eq-1 * 2 - eq-2 * 5

16x+10y = 18

- 15x+10y = 08 (Chang the signs)

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x = 10

_______________

x = 10 sub in eq-2

3 (10) + 2y = 4

30 + 2y = 4

2y = -26

y = -13

______________________________

2)eq-1*2 - eq-2

4x +6y = 16

-4x + 6y = 7

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0 is not equal to 9

Solution is inconsistent

3) sorry I don't know the step

x = 3 y = 4

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