А) -10*(-15)*7 = 1050
- (-10*(-15)*7) = -1050
-(-10)*-7*(-15) = 10*(-7)*(-15) = 1050
-10*7*-(-15) = -10*7*15 = -1050
б) -10-(7-(-15)) = -10-(7+15) = -10-22= -32
-(-10) - (7 +(-15)) = 10 - (7-15) = 10 -(-8) = 10+ 8 = 18
7 -(-10) -(-15) = 7+10+15 = 32
-15 - (-10) - 7 = -15 + 10 - 7 = -12
в) -10*(-15 - 7) = -10 * (-22) = 220
7 * ( -10-(-15)) = 7* (-10+15) = 7*5 = 35
-15 * ( -10 + 7) = -15 * (-3) = 45
(-10 - 7) * ( 7 + (-15)) = -17 * ( 7-15) = 17* (-8) = -136