(-3)×5² - 2×(-4 +3)⁷ = -3×25 - 2×(-1)⁷ = -75 - 2×(-1) = -75 + 2 = -73


5×[13 – 5×(7 – 9) + 3²] – 5 = 5×[13 – 5×(–2) + 9] – 5 = 5×[13 + 10 + 9] – 5 =

5×32 – 5 = 160 – 5 = 155

| 5 – 2 | · | – 4 | = 3 · 4 = 12

(12 + |– 6 | ) : | – 6 | = ( 12 + 6 ) : 6 =18 : 6 = 3