Всего 4 задания с номерами
СДЕЛАЙТЕ И 4 ЗАДАНИЯ ПОЛНОСТЬЮ

ответ:

[tex]4\frac{5}{7} -2\frac{6}{7}=1\frac{6}{7}[/tex]

[tex]6\frac{1}{9} -5\frac{4}{9}=\frac{2}{3}[/tex]

[tex]8\frac{13}{14} -3\frac{17}{24}=5\frac{37}{168}[/tex]

[tex]3\frac{7}{12} -2\frac{11}{12}=\frac{2}{3}[/tex]

[tex]10-3\frac{1}{4}=6\frac{3}{4}[/tex]

[tex]12\frac{1}{3}-7\frac{3}{4}=5\frac{1}{12}[/tex]

[tex]24\frac{3}{10}-4\frac{3}{5} = 19\frac{7}{10}[/tex]

[tex]9-2\frac{7}{12}=6\frac{5}{12}[/tex]

пошаговое объяснение:

[tex]4\frac{5}{7} -2\frac{6}{7}=2\frac{5}{7}-\frac{6}{7}=1\frac{12-6}{7}=1\frac{6}{7}[/tex]

[tex]6\frac{1}{9} -5\frac{4}{9}=1\frac{1}{9} -\frac{4}{9}=\frac{10-4}{9} =\frac{6}{9}=\frac{2}{3}[/tex]

[tex]8\frac{13}{14} -3\frac{17}{24}=5\frac{13}{14} -\frac{17}{24}=5\frac{13*12}{168} -\frac{17*7}{168}=5\frac{156-119}{158} =5\frac{37}{168}[/tex]

[tex]3\frac{7}{12} -2\frac{11}{12}=1\frac{7}{12} -\frac{11}{12}=\frac{19-11}{12} = \frac{8}{12}= \frac{2}{3}[/tex]

[tex]10-3\frac{1}{4}=9\frac{4}{4} -3\frac{1}{4}=6\frac{4-1}{4}=6\frac{3}{4}[/tex]

[tex]12\frac{1}{3}-7\frac{3}{4}=5\frac{1}{3} -\frac{1}{4}=5\frac{4-3}{12}=5\frac{1}{12}[/tex]

[tex]24\frac{3}{10}-4\frac{3}{5}=20\frac{3}{10}-\frac{3}{5}=19\frac{13-6}{10}=19\frac{7}{10}[/tex]

[tex]9-2\frac{7}{12}=8\frac{12}{12} -2\frac{7}{12}=6\frac{12-7}{12}=6\frac{5}{12}[/tex]

ответ:

1. x= -1,1

2. x= -5

3. x=0,7

4. x=4

5. x=0

пошаговое объяснение:

[tex]1. 9^{5x+4} = \frac{1}{27}[/tex]

[tex]3^{2(5x+4)} =3^{-3}[/tex]

2·(5x+4) = -3

10x+8= -3

10x= -11

x= -1,1

[tex]2. (\frac{1}{2})^{1,2x+3} = 8[/tex]

[tex]2^{-1(1,2x+3)} = 2^{3}[/tex]

-1·(1,2x+3)= 3

1,2x + 3 = -3

1,2x= -6

x= -5

[tex]3. 2^{3-5x} = \frac{1}{\sqrt{2}}[/tex]

[tex]2^{3-5x} = 2^-\frac{1}{2}[/tex]

3-5x= -1/2

5x= 3+1/2

5x= 7/2

x=7/10=0,7

4. 4ˣ=64

4ˣ= 4³

x=4

5. 6ˣ+6ˣ⁺¹=2ˣ+2ˣ⁺¹+2ˣ⁺²

6ˣ+6·6ˣ=2ˣ+2·2ˣ+2²·2ˣ

6ˣ·(1+6)=2ˣ·(1+2+4)

(6/2)ˣ=7/7

3ˣ=1

3ˣ=3⁰

x=0