Question

7 × = 5 ×

Answer 1

$7*5^x=5*7^x |:7^x\\ \\ 7*\frac{5^x}{7^x} =5* \frac{7^x}{7^x} \\ \\ 7*( \frac{5}{7} )^x=5|:7 \\ \\ (\frac{5}{7})^x= \frac{5}{7} \\ \\ x=1$