Z podanych wzorów wyznacz x :a)2(x-2y)+5(a-3x)=bb)3-x / k =m k≠0c)2m/x=4k x≠0d)a+4x/b=3l b≠0proszę obliczenia
a)2(x-2y)+5(a-3x)=b 2x-4y+5a-15x=b -13x=b+4y-5a x=-(b+4y-5a)/13 b)3-x / k =m k≠0 k>0 -> 3-x=km x=-km/3 k<0 -> 3-x=-km x=km/3 c)2m/x=4k x≠0 x>0 -> 2m/4k=x x<0 -> -2m/4k=x d)a+4x/b=3l b≠0 b>0 -> a+4x=3lb 4x=3lb-a x=(3lb-a)/4 b<0 -> a+4x=-3lb x=-(3lb-a)/4
a)2(x-2y)+5(a-3x)=b2x-4y+5a-15x=b-13x=b+4y-5ax=-(b+4y-5a)/13b)3-x / k =m k≠0k>0 -> 3-x=km x=-km/3k<0 -> 3-x=-kmx=km/3c)2m/x=4k x≠0x>0 -> 2m/4k=xx<0 -> -2m/4k=xd)a+4x/b=3l b≠0b>0 -> a+4x=3lb4x=3lb-ax=(3lb-a)/4b<0 -> a+4x=-3lbx=-(3lb-a)/4
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a)2(x-2y)+5(a-3x)=b
2x-4y+5a-15x=b
-13x=b+4y-5a
x=-(b+4y-5a)/13
b)3-x / k =m k≠0
k>0 -> 3-x=km
x=-km/3
k<0 -> 3-x=-km
x=km/3
c)2m/x=4k x≠0
x>0 -> 2m/4k=x
x<0 -> -2m/4k=x
d)a+4x/b=3l b≠0
b>0 -> a+4x=3lb
4x=3lb-a
x=(3lb-a)/4
b<0 -> a+4x=-3lb
x=-(3lb-a)/4
a)2(x-2y)+5(a-3x)=b
2x-4y+5a-15x=b
-13x=b+4y-5a
x=-(b+4y-5a)/13
b)3-x / k =m k≠0
k>0 -> 3-x=km
x=-km/3
k<0 -> 3-x=-km
x=km/3
c)2m/x=4k x≠0
x>0 -> 2m/4k=x
x<0 -> -2m/4k=x
d)a+4x/b=3l b≠0
b>0 -> a+4x=3lb
4x=3lb-a
x=(3lb-a)/4
b<0 -> a+4x=-3lb
x=-(3lb-a)/4