8(3x+1)=9(x-5)-7
24х-9х=-8-45-7
15х=-60
х=-4
Проверка:
8(3(-4)+1)=9(-4-5)-7
8×(-11)=9(-9)-7
-88=-81-7
-88=-88
8(3x+1)=9(x-5)-7
24х-9х=-8-45-7
15х=-60
х=-4
Проверка:
8(3(-4)+1)=9(-4-5)-7
8×(-11)=9(-9)-7
-88=-81-7
-88=-88