System: 5690

Solve the system:

2 * (x-2) = 6y + 6
y-x = -2

Correct answer:

x =  0.5
y =  -1.5

Step-by-step explanation:


2·(x-2)=6y+6
y-x=-2

2·(x-2)=6·y+6
y-x=-2

2x-6y = 10
x-y = 2

Row 2 - 1/2 · Row 1 → Row 2
2x-6y = 10
2y = -3


y = -3/2 = -1.5
x = 10+6y/2 = 10+6 · (-1.5)/2 = 0.5

x = 1/2 = 0.5
y = -3/2 = -1.5

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