Question

calcule o valor de x de modo que;

2x+3=15
7x-1=13
2x-4=3
4x+2=-18
5x-2=7+6
10x+1=-4-5​

Answer 1

calcule o valor de x de modo que;

2x+3=15

$2x + 3 = 15 \\ 2x = 15 - 3 \\ 2x = 12 \\ x = \frac{12}{6} \\ \\ o \: valor \: de \: x \: = 2$

7x-1=13

$7x - 1 = 13 \\ 7x = 13 + 1 \\ 7x = 14 \\ x = \frac{14}{7} \\ \\ o \: valor \: de \: x = 2$

2x-4=3

$2x - 4 = 3 \\ 2x = 3 + 4 \\ 2x = 7 \\ x = \frac{7}{2}$

4x+2=-18

$4x + 2 = 18 \\ 4x = 18 - 2 \\ 4x = 16 \\ x = \frac{16}{4} \\ \\ o \: valor \: de \: x = 4$

5x-2=7+6

$5x - 2 = 7 + 6 \\ 5x = 7 + 6 + 2 \\ 5x = 15 \\ x = \frac{15}{5} \\ \\ o \: valor \: de \: x = 3$

10x+1=-4-5

$10x + 1 = 4 - 5 \\ 10x = 4 - 5 - 1 \\ 10x = 2 \\ x = \frac{-2}{10}$

espero ter ajudado!!