3(7+x)=36

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Solution for 3(7+x)=36 equation: 


Simplifying
3(7 + x) = 36
(7 * 3 + x * 3) = 36
(21 + 3x) = 36

Solving
21 + 3x = 36

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 3x = 36 + -21

Combine like terms: 21 + -21 = 0
0 + 3x = 36 + -21
3x = 36 + -21

Combine like terms: 36 + -21 = 15
3x = 15

Divide each side by '3'.
x = 5

Simplifying
x = 5

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