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x+2(+1-3)=+8 -3x ???????

Răspuns :

x + 2+ 1 -3 = 8 - 3x
x = 8- 3x
x + 3x = 8
4x=8 => x=2
x+2(1-3)=8-3x
x+ 2-6=8-3x
x-3x=8-2+6
-2x=12
x= 12:-2 
x= -6