twenty-seven ^x- twenty-eight * three ^x+ one + three ^ five -x= zero
27 to the power of x minus 28 multiply by 3 to the power of x plus 1 plus 3 to the power of 5 minus x equally 0
twenty minus seven to the power of x minus twenty minus eight multiply by three to the power of x plus one plus three to the power of five minus x equally zero