Question

Rezolvați in R ecuația:
$\frac{x - 2}{5} + \frac{x + 1}{2} = 3$
ajutor va rog​

Answer 1

Răspuns:

Explicație pas cu pas:

2(x - 2)/10 + 5(x + 1)/10 = 30/10

2x - 4 + 5x + 5 = 30

7x + 1 = 30

7x = 30 - 1 = 29

x = 29/7

Answer 2

$\frac{x - 2}{5} + \frac{x + 1}{2} = 3$

$\frac{2(x - 2)}{10} + \frac{5(x + 1)}{10} = 3$

$\frac{2x - 4}{10} + \frac{5x + 5}{10} = 3$

$\frac{2x - 4 + 5x + 5}{10} = 3$

$2x - 4 + 5x + 5 = 3 \times 10$

$7x + 1 = 30$

$7x = 29$

$x = \frac{29}{7}$