November 2018 1 50 Report

wyraz 'razy' zastępuje znak mnozenia

Jaką liczbą jest x ?

a)

x - 3 = -7

2x + 1 = 9

3x = 0

2 + x = 0

b)

4 razy x = 1

x : (-5) = 1

x : 8 = 0

(2 - x) razy 3 = 0

rozwiąż równania :

5x + 9 = 24

8x - 3 = -27

2( x + 2 ) = 10

-3(2x - 1 ) = -15


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