1+2+3+4+5+6+7+8=2x

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Solution for 1+2+3+4+5+6+7+8=2x equation: 


Simplifying
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 = 2x

Combine like terms: 1 + 2 = 3
3 + 3 + 4 + 5 + 6 + 7 + 8 = 2x

Combine like terms: 3 + 3 = 6
6 + 4 + 5 + 6 + 7 + 8 = 2x

Combine like terms: 6 + 4 = 10
10 + 5 + 6 + 7 + 8 = 2x

Combine like terms: 10 + 5 = 15
15 + 6 + 7 + 8 = 2x

Combine like terms: 15 + 6 = 21
21 + 7 + 8 = 2x

Combine like terms: 21 + 7 = 28
28 + 8 = 2x

Combine like terms: 28 + 8 = 36
36 = 2x

Solving
36 = 2x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-2x' to each side of the equation.
36 + -2x = 2x + -2x

Combine like terms: 2x + -2x = 0
36 + -2x = 0

Add '-36' to each side of the equation.
36 + -36 + -2x = 0 + -36

Combine like terms: 36 + -36 = 0
0 + -2x = 0 + -36
-2x = 0 + -36

Combine like terms: 0 + -36 = -36
-2x = -36

Divide each side by '-2'.
x = 18

Simplifying
x = 18

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