As a result of general sheridan’s use of the total war strategy during the shenandoah valley campaign, the south
retaliated by marching to the sea.
could not provide supplies for its army.
surrendered and brought an end to the war.
vowed to destroy civilian resources in the north.

The answer was the South could not provide supplies for its army. Sheridan applied a “scorched earth” campaign in the valley.  He had burned and destroyed anything that could be of use to the rebels.  Though General Jubal Early launched a surprise attack that caught the Union off guard, Sheridan rallied the men and turned the tables defeating Early and the Senandoah Valley was closed to the South.

simplify brackets

8 - 2a - 7 = a + 40

simplify 8 - 2a - 7 to -2a + 1

-2a + 1 = a + 40

add 2a to both sides

1 = a + 40 + 2a

simplify a + 40 + 2a to 3a + 40

1 = 3a + 40

subtract 40 from both sides

1 - 40 = 3a

simplify 1 - 40 o -39

-39 = 3a

divide both sides by 3

-39/3 = a

simplify 39/3 to 13

-13 = a

switch sides

a = -13

false the first governing document in the us history was the articles of federation