a)
[tex] \frac{1}{2} a + 1 \frac{3}{4} = 2 \\ \frac{1}{2} a + \frac{7}{4} = 2| \times 4 \\ 2a + 7 = 8 \\ 2a = 1 \\ a = \frac{1}{2} [/tex]
b)
[tex]10p - 5 \frac{2}{3} = 1 \frac{1}{3} \\ 10p - \frac{17}{3} = \frac{4}{3} | \times 3 \\ 30p - 17 = 4 \\ 30p = 21 \\ p = \frac{21}{30} = \frac{7}{10} [/tex]
c)
[tex] \frac{1}{2} d = 2 - \frac{3}{4} | \times 4 \\ 2d = 8 - 3 \\ 2d = 5 \\ d = \frac{5}{2} = 2 \frac{1}{2} [/tex]
d)
[tex] \frac{2}{3} \div b = \frac{5}{6} \\ \frac{2}{3} \times \frac{1}{b} = \frac{5}{6} \\ \frac{2}{3b} = \frac{5}{6} \\ 12 = 15b | \div 15 \\ b = \frac{12}{15} = \frac{4}{5} [/tex]
Myślę że pomogłem ;)
