7+3x=30

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Solution for 7+3x=30 equation: 


Simplifying
7 + 3x = 30

Solving
7 + 3x = 30

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 3x = 30 + -7

Combine like terms: 7 + -7 = 0
0 + 3x = 30 + -7
3x = 30 + -7

Combine like terms: 30 + -7 = 23
3x = 23

Divide each side by '3'.
x = 7.666666667

Simplifying
x = 7.666666667

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