a. (45−1):35−23.0,5
=−15.53−23.12
=−13−13
=−23
b. 1−(59−23)2:427
=1−(59−69)2:427
=1−(−19)2.274
=1−181.274
=1−112=1112
c. [1−(38−512).6+13].4
=[(924−1024).6+13].4
=[−124.6+13].4
=[−14+13].4
=112.4=13
d. 0,8:{0,2−7.[16+(521−514)]}
=45:{0,2−7.[16+(521−514)]}
=45:{15−7}.[742+−542]
=45:{15−7.121}
=45:{15−13}
=45:−215=45.−152=−6
