3x+13=100

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Solution for 3x+13=100 equation: 


Simplifying
3x + 13 = 100

Reorder the terms:
13 + 3x = 100

Solving
13 + 3x = 100

Solving for variable 'x'.

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

Add '-13' to each side of the equation.
13 + -13 + 3x = 100 + -13

Combine like terms: 13 + -13 = 0
0 + 3x = 100 + -13
3x = 100 + -13

Combine like terms: 100 + -13 = 87
3x = 87

Divide each side by '3'.
x = 29

Simplifying
x = 29

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