Oblicz :
2(x+5+10)=5x+5*10.
2x + 10 + 20= = 5x + 50
2x - 5x = 50 - 10 - 20
-3x = 20 / :(-3)
x = -6 i 2/3
2(x+5+10)=5x+5*10
2x+10+20=5x+50
2x-5x=50-10-20
-3x=20 |:(-3)
x=-20/3
x=-6 2/3
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2(x+5+10)=5x+5*10.
2x + 10 + 20= = 5x + 50
2x - 5x = 50 - 10 - 20
-3x = 20 / :(-3)
x = -6 i 2/3
2(x+5+10)=5x+5*10
2x+10+20=5x+50
2x-5x=50-10-20
-3x=20 |:(-3)
x=-20/3
x=-6 2/3