Решите: -6+z=0 (-3.8):х=38 2(х+3)=12
Z/5+3=-7 8х-12=3х+8 0.8у+1.2=0.4у-2.8
-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