a: x=-7-5=-12
b: =>-27-x=0
=>x+27=0
=>x=-27
c: =>x-21=0
=>x=21
d: =>26-x=1
=>x=25
`@Muopngot k h a t`
`a) 5 + x = -7`
`=> x = -7 - 5`
`=> x = -7 + (-5)`
`=> x = -12`
__
`b) -32 - x - 5 = 0`
`=> x - 5 = -32 - 0`
`=> x - 5 = -32`
`=> x = -32 + 5`
`=> x = -27`
__
`c)-12+x-9=0`
`=>x-9=0-(-12)`
`=>x-9=12`
`=>x=12+9`
`=>x=21`
__
`d)11+15-x=1`
`=>15-x=1-11`
`=>15-x=-10`
`=>x=15-(-10)`
`=>x=25`