Find the Value of the Speciﬁed ﬁNite Sum$$\text { Given } \sum _ { k = 1 } ^ { n } a _ { k } = 5 \text { and } \sum _ { k = 1 } ^ { n } b _ { k } = 7 \text {, find } \sum _ { k = 1 } ^ { n } \left( a _ { k } - 2 b _ { k } \right) \text {. }$$

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The Answer of Find the Value of the Speciﬁed ﬁNite Sum$$\text { Given } \sum _ { k = 1 } ^ { n } a _ { k } = 5 \text { and } \sum _ { k = 1 } ^ { n } b _ { k } = 7 \text {, find } \sum _ { k = 1 } ^ { n } \left( a _ { k } - 2 b _ { k } \right) \text {. }$$

Find the Value of the Speciﬁed ﬁNite Sum A) 9
B) -19
C) -9
D) 19

Definitions:

Find the Value of the Speciﬁed ﬁNite Sum A) 9 B) -19 C) -9 D) 19

Definitions:

Find the Value of the Speciﬁed ﬁNite Sum A) 9
B) -19
C) -9
D) 19