calculeaza respectand regulil invatate.a)[1280:4-(120:4-240×0)]:2

Răspuns :

[1280:4-(120:4-240×0)]:2=
[320-(30-0)]:2=
(320-30):2=
290:2= 145
[1280:4-(120:4-240×0)]:2=
[320-(30-0)]:2=
(320-30):2=
290:2=145