Question

dau coroana va rog rapid ​

Answer 1

Explicație pas cu pas:

$\mathbf{h) \frac{x + \frac{1}{2} }{0.8(3)} = \frac{2 + \frac{1}{2} }{3} }$

$\mathbf{ \frac{x + \frac{1}{2} }{ \frac{83 - 8}{90} } = \frac{2 + \frac{1}{2} }{3} \: \: \: \: \: \: \: \: \: \frac{ \frac{2x + 1}{2} }{ \frac{75}{90} } = \frac{ \frac{5}{2} }{3} }$

$\mathbf{ \frac{ \frac{2x + 1}{2} }{ \frac{5}{6} } = \frac{5}{6} \: \: \: \: \: \ \: \: \frac{(2x + 1) \times 3}{5} = \frac{5}{6} }$

$\mathbf{ \frac{6x + 3}{5} = \frac{5}{6} \: \: \: iar \: acum \: inmultim \: pe \: diagonala}$

$\mathbf{6(6x + 3) = 5 \times 5 = 25}$

$\mathbf{36x + 18 = 25}$

$\mathbf{36x = 25 - 18 = > 36x = 7 }$

$\mathbf{x = \frac{7}{36} }$

Bafta!