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Sagot :

Answer:

x = 8 and y = 10

Step-by-step explanation:

The given equations are :

2x -y  = 6 ....(1)

-9x + 3y = -42 ....(2)

Multiply eqation (1) by 3.

6x - 3y = 18 .....(3)

Adding equation (2) and (3).

-9x + 3y + 6x - 3y = -42 +18

-3x = -24

x = 8

Put the value of x in equation (1).

2(8) -y  = 6

16 - 6 = y

y = 10

Hence, the values of x and y are 8 and 10 respectively.

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