Question

realizar las siguientes ecuaciones con números racionales:​

Answer 1

Explicación paso a paso:

9.-

$3x + 5 = 890 \\ 3x = 890 - 5 \\ 3x = 885 \\ x = \frac{885}{3} \\ x = 295$

10.-

$- 7x - 6 = 57 \\ - 7x = 57 + 6 \\ - 7x = 63 \\ x = \frac{63}{ - 7} \\ x = - 9$

11.-

$2x + 8 = 21 \\ 2x = 21 - 8 \\ 2x = 13 \\ x = \frac{13}{2} \\ x = 6.5$

12.-

$6x - 25 = 11 \\ 6x = 11 + 25 \\ 6x = 36 \\ x = \frac{36}{6} \\ x = 6$

13.-

$2x + 8 = 24 \\ 2x = 24 - 8 \\ 2x = 16 \\ x = \frac{16}{2} \\ x = 8$

14.-

$6x - 25 = 11 \\ 6x = 11 + 25 \\ 6x = 36 \\ x = \frac{36}{6} \\ x = 6$

15.-

$0.2x - 4 = 1 \\ 0.2x = 1 + 4 \\ 0.2x = 5 \\ x = \frac{5}{0.2} \\ x = 25$

16.-

$1.25x - 2.5 = 1.25 \\ 1.25x = 1.25 + 2.5 \\ 1.25x = 3.75 \\ x = \frac{3.75}{1.25} \\ x = 3$

17.-

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