7(8+х)=147
56+7х=147
7х=91
х=13
Ответ: 13
7(2^3+x)=612-465
7(8+x)=147
56+7x=147
7x=147-56
7x=91
X=91:3
X=13
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7(8+х)=147
56+7х=147
7х=91
х=13
Ответ: 13
7(2^3+x)=612-465
7(8+x)=147
56+7x=147
7x=147-56
7x=91
X=91:3
X=13