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2(x+[tex] \frac{1}{2} [/tex])+5=[tex] \frac{1}{2} [/tex] pentru azi caci daca nu iau 2

Răspuns :

[tex]\displaystyle 2\left(x+ \frac{1}{2} \right)+5= \frac{1}{2} \\ \\ 2x+ \frac{2}{2} +5= \frac{1}{2} \\ \\ 2x+1+5= \frac{1}{2} \\ \\ 2x \cdot 2+1 \cdot 2+5 \cdot 2=1 \\ 4x+2+10=1 \\ 4x=1-2-10 \\ 4x=-11 \\ \\ \boxed{x=- \frac{11}{4} }[/tex]
2(x+1/2)+5=1/2=2x+6=1/2
2*2x+2*6= 2 1/2
4x+12=1
4x+12-12=1-12
4x=-11
4x/4= -11/4
x= - 11/4