September 2018 1 13 Report

zbiór zadań . Matematyka z plusem . klasa 1 gim.

Proporcjonalność .

1. Proporcje .

zad.2 str. 86

a)

\frac{5}{x-10} = \frac{-3}{1-2x}

b)

\frac{2}{6} = \frac{2x+1}{7x-2}

c)

\frac{6}{9x+2} + \frac{4}{6x+1}

d)

\frac{2}{3x+1} = \frac{1}{x+5}

e)

\frac{x+5}{2} = \frac{10+2x}{4}

f)

\frac{2x+1}{x^{2}+5} = \frac{2}{x}

h)

\frac{2x-6}{x-2} = \frac{2}{3}

i)

\frac{0,5x-3}{0,2} = \frac{0,7x-2}{0,5}

j)

\frac{2-x}{0,2x+1} = \frac{5}{3}

k)

\frac{0,2}{0,5x+0,1} = \frac{8}{3x-1}


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