Question

[(-7pe3la puterea 2):35pe54-2,8]*(-25:1,25)=
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Answer 1

[(-7/3²):35/54-2,8]*(-25:1,25)=
=[(-7/3²)×54/35-28/10]*(-25:125/100)=
=(-7/9×54/35-14/5)*(-25:5/4)=
=(-1/1×6/5-14/5)*(-25×4/5)=
=(-6/5-14/5)*(-20)=
=(-20/5)*(-20)=
=80

Answer 2

(-7pe3la puterea 2* 54pe35-2,8)*(-20)
(-7la puterea 2 * 18pe 35-2,8)*(-20)
(-18*7la puterea 2 pe 35-2,8)*(-20)
(-18*49pe 35-2,8)*(-20)
(-18*7pe 5-2,8)*(-20)
(-126pe 5-2,8)*(-20)
(-28)*(-20)
=560