In which ways was the central powers offensive at verdun similar to the allied offensive at somme?
a. both battles were turning points for the allies in world war 1
b. neither battle was fought using trench warfare on the western front.
c. neither battle used the modern weapons that had been introduced earlier in the war.
d. both battles had high casualties without either side winning an advantage.

Option D.

Explanation:

Both battles had high casualties without either side winning an advantage, is the right answer.

The Battle of Verdun which took place in the period between  21st February to 18th December 1916 was the longest of all battles during the First World War.

Another important battle of the First World War that took place between Germany and France with its allies Britain, was known as the Battle of the Somme. In both of these battles both the sides causes heavy casualties without either side accomplishing an advantage. Therefore, option D will be the right answer.

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