November 2018 2 31 Report

Rozwiąż równania:

a) 4 + 2x = 9

b) 5x - 7 = 11

c) 6x + 5 = 4 + 5x

d) 2 + 3x = 6 - x

w ten sposób:

a) 4 + 2x = 9 /-4

2x = 5 /:2

x = 2,5 :)


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