2(10х-18)*2-8(10х-18=-6
(2*2-8)*(10х-18)=-6
(4-8)*(10х-18)=-6
-4(10х-18)=-6
10х-18=3_
2
10х=3_. +18
10х=39
----
х= 39
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20
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2(10х-18)*2-8(10х-18=-6
(2*2-8)*(10х-18)=-6
(4-8)*(10х-18)=-6
-4(10х-18)=-6
10х-18=3_
2
10х=3_. +18
2
10х=39
----
2
х= 39
-----
20