[3×10-(5×10×2-8×10)]×25÷5=

Răspuns :

[3×10-(5×10×2-8×10)]×25÷5=
[30-(100-80)]X25:5=
[30-20}X25:5=
10X25:5=
250:5=50

[3×10-(5×10×2-8×10)]×25÷5=50
[30-(100-80)]×25÷5=50
(30-20)×25÷5=50
10×25÷5=50
250÷5=50