Odpowiedź:
a)
[tex]x + 23 = 11 \\ x = 11 - 23 \\ x = - 12[/tex]
[tex]y - 18 = - 52 \\ y = - 52 + 18 \\ y = -3 4[/tex]
[tex]27 - z = 62 \\ - z = 62 - 27 \\ - z = 35 \\ z = - 35[/tex]
[tex]2.4 + a = 7.1 \\ a = 7.1 - 2.4 \\ a = 4.7[/tex]
[tex]5 \frac{2}{3} = b + 2 \frac{1}{2} \\ b = 5 \frac{2}{3} - 2 \frac{1}{2} \\ b = 5 \frac{4}{6} - 2 \frac{3}{6} \\ b = 3 \frac{1}{6} [/tex]
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