Question

(-42)-(-7)-(-8)

(+5)-(21)-(+9)

(-71)-0

(-12).(+3).(+1)

(+1).(-101).(-10)

(+1).(+1).(+1).(+1)

(-2).(-5).(+4)

(+6).(-3).(-2)

(-10).(-8).(+5)

(-12).(-5).(+4).(-1)

Answer 1

(-42)-(-7)-(-8) = - 42 + 7 + 8 = - 42 + 15 = - 27

(+5)-(21)-(+9) = 5 - 21 - 9 = 5 - 30 = - 25

(-71)-0 = - 71

(-12).(+3).(+1) = - 12.3 = - 36

(+1).(-101).(-10) = 1.1010 = 1010

(+1).(+1).(+1).(+1) = 1.1 = 1

(-2).(-5).(+4) = 10.4 = 40

(+6).(-3).(-2) = 6.6 = 36

(-10).(-8).(+5) = 80.5 = 400

(-12).(-5).(+4).(-1) = 60.(-4) = - 240