April 2019 0 56 Report
Zbadaj równoważność równań, nie rozwiązując żadnego z nich:
a) 2x - 5 = 6 I 3x + 1 = 13
b) 3x + 4 = 2 I 3x + 5 = 2x +2
c) 4x - 3 = 2x + 7 i 4x - 7 = 2x + 3
d) 3x + 5 = -6x + 32 i 8x + 3 = -x + 30
e) x +2/3 + 1 = x i x + 5 = 3x
f) 5x -4/2 = 16x + 1/7 i 35x - 28 = 16x + 3
g) 5(x - 3) = 2(x + 3) i 5x - 21 = 2x
h)2,1x + 18,4 - 5,7x - 3,2 i 0,6x - 1,6 = 4,2x - 23,2
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