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Roberteliodor
a fost răspuns

rezolvati in multimea z ecuatiile 3x +5 -2(x+2) =8-3(1-x)

Răspuns :

CarMina03
3x+5-2x-4=8-3+3x
x+5=5+3x
5-5=3x-x
0=2x
x=0
Deyoo22
3x+5-(2x+4)=8-3(1-x)
3x+5-2x-4=8-3(1-x)
x+5-4=8-3(1-x)
x+1=8-3(1-x)
x+1=8-( 3-3x)
x+1=8-3+3x
x+1=5-3x
x-3x=5-1
-2x=4
x= 4÷(-2)
x= -2

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