Question

(7/12)-⁴ x(7/12)³×=(7/12)⁵​

Answer 1

7⁴/12⁴-343x³/1728 =7^5/12^5

7⁴/12⁴-(7x)³/12³-7^5/12^5=0

7³/12³(7/12-x-7²/12²)=0

343/1728(7/12-x-49/144)=0

7/12-x-49/144=1728/343

-x=1728/343-7/12+49/144

x=-4.79484531908