1-4(5+2x)=13;
1-20-8х=13;
-19-8х=13;
8х=-19-13;
8х=-32;
х=-32/8;
х=–4.
ответ: –4.
1-20-8х=13
-8х=13-1+20
-8х=32
х=32÷(-8)
х=-4
1-4(5+2x)=13;
1-20-8х=13;
-19-8х=13;
8х=-19-13;
8х=-32;
х=-32/8;
х=–4.
ответ: –4.
1-20-8х=13
-8х=13-1+20
-8х=32
х=32÷(-8)
х=-4