Macar primele 3 calcule, va rog mult

3 * X = -12
X = -12 : 3
X = -4
8 * X = 24
X = 24 : 8
X = 3
-4X = -28
X = -28 : -4
X = -7
4X = -28
X = -28 : 4
X = -7
-5X = 0
X = 0
10X = 10
X = 10 : 10
X = 1