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ucenikthl
@ucenikthl
July 2022
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решите уравнение :5 (8z-1)-7 (4z+1)+8 (7-4z)=9
10 (3x-2)-3 (5x+2)+5 (11-4x)=25
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сухарик05
5(8z-1)-7(4z+1)+8(7-4z)=9
40z-5-28z-7+56-32z=9
-20z+44=9
-20z=9-44
-20z=-35
-z=-35/20
-z=-1,75
z=1,75
10(3х-2)-3(5х+2)+5(11-4х)=25
30х-20-15х-6+55-20х=25
-5х+29=25
-5х=25-29
-5х=-4
-х=-4/5
-х=-0,8
х=0,8
1 votes
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Answers & Comments
40z-5-28z-7+56-32z=9
-20z+44=9
-20z=9-44
-20z=-35
-z=-35/20
-z=-1,75
z=1,75
10(3х-2)-3(5х+2)+5(11-4х)=25
30х-20-15х-6+55-20х=25
-5х+29=25
-5х=25-29
-5х=-4
-х=-4/5
-х=-0,8
х=0,8