Question

CALCULE: 49 (elevado a x) - 42 = 7 (elevado a x)

Answer 1

${49}^{x} - 42 = 7 \\ {49}^{x} = 7 + 42 \\ {49}^{x} = 49 \\ {49}^{x} = {49}^{1} \\ \boxed{x = 1}$