Rozwiąż równania :
5x + 1 = 6
2x - 1 = 9
Oraz oblicz
2-0,8(dwie trzecie - 0,5)
5x=6-1
5x=5 /:5
x=1
2x-1=9
2x=9-1
2x=8 /:2
x=4
2-0,8(2/3 - 1/2) = 2-0,8(4/6 - 3/6) = 2-0,8*1/6 = 2- 2/15 = 1 13/15
1.x=1
2.x=4
ciezko obliczyc to ostatnie
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5x + 1 = 6
5x=6-1
5x=5 /:5
x=1
2x-1=9
2x=9-1
2x=8 /:2
x=4
2-0,8(2/3 - 1/2) = 2-0,8(4/6 - 3/6) = 2-0,8*1/6 = 2- 2/15 = 1 13/15
1.x=1
2.x=4
ciezko obliczyc to ostatnie