Question

Выполните умножение ​

Answer 1

Ответ:

$1)\frac{9}{2a}*\frac{5a}{3}=\frac{9*5a}{2a*3}=\frac{3*5}{2} =\frac{15}{2} =7,5$

$2)\frac{5a}{8y}*\frac{7}{10} =\frac{5a*7}{8y*10}=\frac{7a}{8y*2} =\frac{7a}{16y}$

$3)\frac{b^{2}}{10} *\frac{5}{b}=\frac{b^{2}*5}{10*b} =\frac{b}{2}$

$4)\frac{12x^{5} }{25} *\frac{15}{8x^{2} } =\frac{12x^{5} *15}{25*8x^{2} } =\frac{3x^{3}*3 }{5*2}=\frac{9x^{3} }{10}$

$5)\frac{5}{3a}*\frac{2b}{3} =\frac{5*2b}{3a*3}=\frac{10b}{9a}$

$6)\frac{3x}{4} *\frac{1}{x}=\frac{3x*1}{4*x} =\frac{3}{4}=0,75$