Question

unui nr ii adaug 132. daca iau jumatate din aceasta suma iar rezultatului obtinut ii adaug 205 obtin nr initial.care este acest nr?

Answer 1

$\frac{x+132}{2} +205=x \\ \frac{x+132}{2} =x-205 \\ x+132=2(x-205) \\ x+132=2x-410 \\ 132=2x-410-x \\ x-410=132 \\ x=410+132 \\ \boxed{x=542}$

Answer 2

x+132/2 +205=x
x+232/2=x-205
x+132=2(x-205)
x+132=2x-410
132=2x-410-x
x-410=132
x=410+132
x=542