Calcula..
a) (-12) - (+15). c) (-16) - (+16) e) (+11) - (-7)
b) (-16) - (-12) d) (-37) - (-28) f) (-9) - (-7).
a) (-12) - (+15). c) (-16) - (+16) e) (+11) - (-7)
b) (-16) - (-12) d) (-37) - (-28) f) (-9) - (-7).
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12-15=+3
B) (-16)-(12)=
16+12= +28
C) (-16)-(+16)=
16-16=-0
D) (-37)-(-28)=
37+28= -65
E) (+11)-(-7)=
11-7= +4
F) (-9)-(-7)=
9+7=-16