1) (-4)+(-3)-(+7)=-4-3-7=-14
2)(-4)+(-9)-(-11)=-4-9+11=-13+11=-2
3) (-а)+(-7b)+1/3c=-а|(*3)-7b|(*3)+1/3c=-3a/3-21b/3+1/3c
4)2a+(-3b)-4c=2a-3b-4c
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1) (-4)+(-3)-(+7)=-4-3-7=-14
2)(-4)+(-9)-(-11)=-4-9+11=-13+11=-2
3) (-а)+(-7b)+1/3c=-а|(*3)-7b|(*3)+1/3c=-3a/3-21b/3+1/3c
4)2a+(-3b)-4c=2a-3b-4c