Ответы на вопрос:
-6 + z = 0 (-3.8): x = 38 2(x+3) = 12
z = 6. x = -3.8: 38 2x + 6 = 12
x = -0.1 2x = 6
x = 3
z/5 + 3 = -7 8x - 12 = 3x + 8 0.8у+1.2=0.4у-2.8
z/5 = -10 5x = 20 0.4y = -4
z = -50 x = 4 y = -10
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