What reforms took place in Russia in the 1800s?

The 1800s was a century of reform and reaction in Russia. It was marked by the emancipation of serfdom, revolutionary violence and reactionary policies. 2. Defeat in the Crimean War exposed Russia's lack of development in relation to its European neighbours

Explanation:I am incredibly sorry if I am wrong

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