3x+7+1=20

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Solution for 3x+7+1=20 equation: 


Simplifying
3x + 7 + 1 = 20

Reorder the terms:
7 + 1 + 3x = 20

Combine like terms: 7 + 1 = 8
8 + 3x = 20

Solving
8 + 3x = 20

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 + 3x = 20 + -8

Combine like terms: 8 + -8 = 0
0 + 3x = 20 + -8
3x = 20 + -8

Combine like terms: 20 + -8 = 12
3x = 12

Divide each side by '3'.
x = 4

Simplifying
x = 4

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