3x+4x+8=85

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Solution for 3x+4x+8=85 equation: 


Simplifying
3x + 4x + 8 = 85

Reorder the terms:
8 + 3x + 4x = 85

Combine like terms: 3x + 4x = 7x
8 + 7x = 85

Solving
8 + 7x = 85

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + 7x = 85 + -8

Combine like terms: 8 + -8 = 0
0 + 7x = 85 + -8
7x = 85 + -8

Combine like terms: 85 + -8 = 77
7x = 77

Divide each side by '7'.
x = 11

Simplifying
x = 11

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