Respuesta :

x = -3 

Pull out the like terms: -7x - 21 = -7 × ( x + 3) 

Solve: -7 = 0 

Solve: x + 3 = 0

Subtract 3 from both sides of the equation 

So, x = -3
 
(-5) x+5-8x=26 (-5)
x-8x=21
-7x=21
-7x(/-7)=21(/-7)
x=-3
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