50-(7+3x)=4

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Solution for 50-(7+3x)=4 equation: 


Simplifying
50 + -1(7 + 3x) = 4
50 + (7 * -1 + 3x * -1) = 4
50 + (-7 + -3x) = 4

Combine like terms: 50 + -7 = 43
43 + -3x = 4

Solving
43 + -3x = 4

Solving for variable 'x'.

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

Add '-43' to each side of the equation.
43 + -43 + -3x = 4 + -43

Combine like terms: 43 + -43 = 0
0 + -3x = 4 + -43
-3x = 4 + -43

Combine like terms: 4 + -43 = -39
-3x = -39

Divide each side by '-3'.
x = 13

Simplifying
x = 13

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