Question

сократите дробь 1) 12xy^7+2/30xy^2t^2 2)a^2-25ab/4ab+20ab

Answer 1

$frac{12xy^7+2}{30xy^2t^2}=frac{2left(6xy^7+1right)}{30xy^2t^2}=frac{6xy^7+1}{15xy^2t^2} \ frac{a^2-25ab}{4ab+20ab}=frac{a^2-25ab}{24ab}=frac{aleft(a-25bright)}{24ab}=frac{a-25b}{24b}$