а) 1/6х+х=3 б)4:(20-х)=0,3. Created by 9260512. matematika-ru

А) 6x²-18x=-16x(x-3)=-16x=-1 or x-3=-1x=-1/6 x=2б)4=0.3(20-x)4=6-0.3x-0.3x=-2|*(-10)3x=20x=20/3

6х+х=3 б)4:(20-х)=0,3...

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а) 1/6х+х=3
б)4:(20-х)=0,3

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acar А) $\frac{1}{6x} +x=3|*6x$

$1+6x^2=18x$

6x²-18x=-1
6x(x-3)=-1
6x=-1 or x-3=-1
x=-1/6 x=2

б) $\frac{4}{20-x} =0.3|*20-x$

4=0.3(20-x)
4=6-0.3x
-0.3x=-2|*(-10)
3x=20
x=20/3

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