a) -(-7)+(-15)*3=
b) 42-[(-5)²*3]+7=
c) 3-(-2)³-3²=
d) 72-(-3)³+(-4)³=
a) -(-7)+(-15)*3 = 7+(-45) = -38
b) 42-[(-5)²*3]+7 = 42-[25*3]+7 = 42-75+7 = -26
c) 3-(-2)³-3² = 3-(-8)-9 = 3+8-9 = 11-9 = 2
d) 72-(-3)³+(-4)³ = 72-(-27)+(-64) = 72+27-64 = 99-64 = 35
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a) -(-7)+(-15)*3 = 7+(-45) = -38
b) 42-[(-5)²*3]+7 = 42-[25*3]+7 = 42-75+7 = -26
c) 3-(-2)³-3² = 3-(-8)-9 = 3+8-9 = 11-9 = 2
d) 72-(-3)³+(-4)³ = 72-(-27)+(-64) = 72+27-64 = 99-64 = 35