Ответ:\(x=7^{5-2}=7^3=343\).\(x=8\cdot8^2=8^3=512\).\(x=3^5\cdot3^2=3^7=2187\).\(x=13^{7-5}=13^2=169\).\(x=6^{9-6}=6^3=216\).\(x=4^{9-5}=4^4=256\).