Ireally need someone's who is knowledgeable, ! and you so very much : )
at the end of the war, the allies agreed to all of the following except:
peace with germany.
the creation of the league of nations.
to immediately attack germany at any hint of another uprise of war.
the league of nations agree to decrease their armaments.

c is the correct answer for this question.

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27