Question

VAMOS A PRACTICAR!!!!
9) Halla el valor de "X
X+11= -18
X-12--13
13 -2 = 31 - X
-3x+2=20
17-5-4-3+x-6
2+19-x-2=11
(-9).x=72
5x+2=17
X.72.63
6x:2=3
-21:x=7
7x+4= -10
.?​

Answer 1

Respuesta:

X+11= -18

x= -11/-18

x= 11/18

X-12--13

x= 12+13

x = 25

13 -2 = 31 - X

x= 31-13+2

x= 20

-3x+2=20

3x= 2-20

x= -18/3

17-5-4-3+x-6

x= -17+5+4+3+6

x= -17+18

x=1

2+19-x-2=11

x= 2+19-2-11

x= 21-13

x= 8

(-9).x=72

x=72/-9

x= -8

5x+2=17

5x=17-2

x=15/5

x=3

X.72.63

x= 0

6x:2=3

no entiendo este xd

-21:x=7

x= -3

7x+4= -10

7x=-10-4

x=-14/7

x= -2