Who remembers to subtract?

If 1.6×1019-1.6\times { 10 }^{ -19 } is less than +1.6×1019+1.6\times { 10 }^{ -19 } by 3.2×10193.2\times { 10 }^{ -19 },

Can we say that the electron has a charge 3.2×1019C\displaystyle 3.2\times { 10 }^{ -19 }C less than the charge of a proton?

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