Equations: 8160

Solve a system of equations:

3x- (y + 2) / 2 = 9
(x + 2) / 5-2y = 5

Correct answer:

x =  3
y =  -2

Step-by-step explanation:


3x-(y+2)/2 =9
(x+2)/5-2y =5

3·x-(y+2)/2 =9
(x+2)/5-2·y =5

6x-y = 20
x-10y = 23

Row 2 - 1/6 · Row 1 → Row 2
6x-y = 20
-9.83y = 19.67


y = 19.66666667/-9.83333333 = -2
x = 20+y/6 = 20-2/6 = 3

x = 3
y = -2

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