Question 202052
{{{(21x^10)/(7x^3)+(18x^8)/(9x)}}} Start with the given expression.



{{{(3x^10)/(x^3)+(2x^8)/(x)}}} Reduce the coefficients.



{{{3x^(10-3)+2x^(8-1)}}} Divide the variable terms by subtracting the exponents.



{{{3x^7+2x^7}}} Subtract



{{{5x^7}}} Combine like terms.



So {{{(21x^10)/(7x^3)+(18x^8)/(9x)=5x^7}}} where {{{x<>0}}}