Question

Выполните умножение 40.2​

Answer 1

Ответ:

1).  $\frac{9}{2a} * \frac{5a}{3} = \frac{9*5a}{2a*3} = \frac{45a}{6a} = \frac{45}{6}$

2). $\frac{5a}{8y} *\frac{7}{10} = \frac{5a*7}{8y*10} = \frac{35a}{80y} = \frac{5*7a}{5*16y} = \frac{7a}{16y}$

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

4). $\frac{12x^{5} }{25} * \frac{15}{8x^{2} } = \frac{36x^{3} }{40} = \frac{9x^{3} }{10}$

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

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

7). $\frac{3b^{2} }{10} * \frac{15}{b^{3} } = \frac{3*b*b*3*5 }{2*5*b*b*b} = \frac{9}{2b}$

8). $\frac{16x^{5} }{35} * \frac{5}{8x^{3} } = \frac{2x^{2} }{7}$

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

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

11). $\frac{18}{c^{4} } * \frac{c^{3} }{24} = \frac{3}{4c}$

12). $\frac{3}{4a^{3} } * \frac{16a^2}{9} = \frac{4}{3a}$

13). $\frac{15x^{3} }{4} * \frac{12}{5x} = 9x^{2}$

14). $\frac{15}{3ab} * \frac{12b^{2} }{3} = \frac{3*5*3*4*b*b}{3*a*b*3} = \frac{20b}{a}$

15). $\frac{18}{c^{4} } * \frac{c^{3} }{24} =\frac{3}{4c}$.