[7-3x]=13

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Solution for [7-3x]=13 equation: 


Simplifying
[7 + -3x] = 13

Remove brackets around [7 + -3x]
7 + -3x = 13

Solving
7 + -3x = 13

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 = 13 + -7

Combine like terms: 7 + -7 = 0
0 + -3x = 13 + -7
-3x = 13 + -7

Combine like terms: 13 + -7 = 6
-3x = 6

Divide each side by '-3'.
x = -2

Simplifying
x = -2

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