you want to solve for x, so we have to start to leave x alone on one side.
since the 5 is multiplying the x^(1/3), you want to divide both sides by x.
now we're left with:
now to get rid of the "1/3", you would take the "x^(1/3)" and raise it to the power of 3, and of course, you want to do that to both sides, so now we get:
the 1/3 and the 3 cancel each other out so now we have:
and just solve 7^3 so:
that's your answer.