bonjour
( x + 4 ) / ( x + 2 ) - 3 = 5
( x + 4 ) ( x + 2 ) = 5 + 3
( x + 4 ) ( x + 2 ) = 8
( x + 4 ) ( x + 2 ) = ( 8 x + 16 ) / ( x + 2 )
x + 4 = 8 x + 16
x - 8 x = 16 - 4
- 7 x = 12
x = - 12 /7
1/ ( 2 x + 4 ) = 8
16 x + 32 = 1
16 x = 1 - 32
16 x = - 31
x = - 31/16
Bjr
B) 1/2x+4=8
B) 1/2x+4=8 ; x≠-2
B) 1=8(2x+4)
B) 1=16x+32
B) 1-16x=32
B) -16x=32-1
B) -16x=31
B) x=-31/16 ; x≠-2
B) x=-31/16
Voilà !
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bonjour
( x + 4 ) / ( x + 2 ) - 3 = 5
( x + 4 ) ( x + 2 ) = 5 + 3
( x + 4 ) ( x + 2 ) = 8
( x + 4 ) ( x + 2 ) = ( 8 x + 16 ) / ( x + 2 )
x + 4 = 8 x + 16
x - 8 x = 16 - 4
- 7 x = 12
x = - 12 /7
1/ ( 2 x + 4 ) = 8
16 x + 32 = 1
16 x = 1 - 32
16 x = - 31
x = - 31/16
Bjr
B) 1/2x+4=8
B) 1/2x+4=8 ; x≠-2
B) 1=8(2x+4)
B) 1=16x+32
B) 1-16x=32
B) -16x=32-1
B) -16x=31
B) x=-31/16 ; x≠-2
B) x=-31/16
Voilà !