Question: 4. Suppose A =aj ta, + . . . + a, and B = bj +by + . . . b, . Show that _(b;

4. Suppose A =aj ta, + . . . + a,
and B = bj +by + . . . b, . Show

4. Suppose A =aj ta, + . . . + a, and B = bj +by + . . . b, . Show that _(b; - a;) = B - A, or, that the sum of the differences of the parts is equal to the difference of the sums of the parts

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