Question

Немало баллов за простое уравнение)

(1/7)^7+х = 49

Answer 1

$(frac{1}{7})^{7+x}=49\\(frac{1}{7})^{7+x}=7^{2}\\(frac{1}{7})^{7+x}=(frac{1}{7}^{-2} \\7+x=-2\\x=-9$