Question

The 5th question only

Answer 1

Step-by-step explanation:

x + 3y = 6 (equation 1)

2x - 3y = 12 (equation 2)

Multiply (1 equation) by 2,

Multiply (2 equation) by 1,

2(x + 3y) = 2(6)

2x + 6y = 12

1(2x - 3y) = 1(12)

2x - 3y = 12

2x + 6y = 12

2x - 3y = 12

- + -

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

9y = 0

y = 0/9

y = 0

x + 3y = 6

x + 3(0) = 6

x + 0 = 6

x = 6

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