12+3х=0 15-3х=0 5-2х=1 -5х-2=-12

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вопрос

To solve the system of equations, we can start by isolating x in each equation:

From the first equation: 12 + 3x = 0
Subtracting 12 from both sides: 3x = -12
Dividing by 3: x = -4

From the second equation: 15 - 3x = 0
Adding 3x to both sides: 15 = 3x
Dividing by 3: x = 5

From the third equation: 5 - 2x = 1
Subtracting 5 from both sides: -2x = -4
Dividing by -2: x = 2

From the fourth equation: -5x - 2 = -12
Adding 2 to both sides: -5x = -10
Dividing by -5: x = 2

Therefore, the solution to the system of equations is x = 2.