-1/2×(2/3x-2/5)-1/3×(3x-1/2=1/4-5/9. Created by пппппппп8. matematika-ru

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-1/2×(2/3x-2/5)-1/3×(3x-1/2=1/4-5/9

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Igornatev -1/2×2/3x= -1/3x
-1/2×(-2/5)=1/5
-1/3×3x= -x
-1/3×(-1/2)=1/6
1/4-5/9=9/36-20/36= -11/36

-1/3x+1/5-x+1/6= -11/36
-1/3x-x= -11/36-11/30
-1 1/3x= -55/180-66/180
-4/3 x= -121/180
x=121/180×3/4=121/240

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