Question

quien me ayuda con estas ecuaciones, urgente porfaaaaaaaaaaaaaaaa

a) x+15=0
b)x+10=-15
c)x+20=-10
d)-4-x=-13
e)3-x=11
f)x-7=-7

Answer 1

a) x+15 = 0
x = -15
b) x+10 = -15
x = -15-10
x = -25
c) x+20 = -10
x = -10-20
x = -30
d) -4-x = -13
-4+13 = x
9 = x ----> x = 9
e) 3-x = 11
3-11 = x
-8 = x ----> x = -8
f) x-7 = -7
x = -7+7
x = 0

Answer 2

x + 15 = 0

x = - 15

Solución  : 

x = - 15
-----------------------------

x + 10 = - 15

x = - 15 - 10

x = - 25

Solución : 

x = - 25
---------------------------------------------

x + 20 = - 10

x = - 10 - 20

x = - 30

Solución : 

x = - 30
-----------------------------------------------------

- 4 - x = - 13

- x = - 13 + 4

- x = - 9

x = 3

Solución : 

x = 9
--------------------------------

3 - x = 11

- x = 11 - 3

- x = 8

x = - 8

Solución : 

x = - 8
------------------------------------

x - 7 = - 7

x = - 7 + 7

x = 0

Solución : 

x = 0