Ответ:
\[39-15=24,\qquad 2^3=8,\qquad 24:8=3.\]
\[3\cdot2^2=3\cdot4=12,\qquad 3-7=-4,\qquad \frac{12}{-4}=-3.\]
\[3+(-3)=0.\]
Ответ: 0.
\[39-15=24,\qquad 2^3=8,\qquad 24:8=3.\]
\[3\cdot2^2=3\cdot4=12,\qquad 3-7=-4,\qquad \frac{12}{-4}=-3.\]
\[3+(-3)=0.\]
Ответ: 0.