The first error was made $in$ Step $3.$

$7ln(x)-2ln(7)-\frac{1}{3}ln(y)$

STEP $1$: $=ln(x^7)-ln(7^2)-ln(y^{\frac{1}{3}})$

STEP $2$: $=ln(x^7)-ln(49)-ln(\sqrt[3]{y})$

STEP $3$: $=ln(x^7-49)-ln(\sqrt[3]{y})$

STEP $4$: $=ln(x^7-49-\sqrt[3]{y})$

Select the error that $is$ made $in$ Step $3of$ this solution.

When rewriting $ln(x^7)-ln(49)as$ a single logarithm, the arguments $x^7$ and $49$ were

$.$ The

arguments should have been

instead.