Question

dau 100 de puncte va rog frumos am mare nevoie ​

Answer 1

Explicație pas cu pas:

2 a) x=7 b)x=11 c)x=6

3. 2×27=9×6. => 54=54 ✓

4.a) <. b)<. c)<

5. 11×54+123 supra 123

Answer 2

Răspuns:

2.

$a) \: \frac{6}{x} = \frac{6}{8}$

$b) \: \frac{x + 3}{14} = \frac{11 + 3}{14} = \frac{14}{14}$

$c) \: \frac{5}{2x - 1} = \frac{5}{2 \times 2 - 1} = \frac{5}{3}$

3.

$\frac{2}{9} = \frac{6}{27} \\ 2 \times 27 = 9 \times 6 \\ 54 = 54$

4.

$a) \: \frac{7}{11} < \frac{7}{9} \\ b) \: \frac{5}{6} < \frac{17}{6} \\ c) \: \frac{8}{11} < \frac{13}{9}$

5.

$11 \frac{54}{123} = \frac{1407}{120} = \frac{469}{41}$

6.

$\frac{432}{17 } = 25 \frac{7}{17}$

7.

$\frac{4500}{8100} {}^{(100} = \frac{45}{81} {}^{(9} = \frac{5}{9}$

8.

${}^{36)} \frac{2}{3} = \frac{72}{108}$