7x-(4x+2)=31

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Solution for 7x-(4x+2)=31 equation:


Simplifying
7x + -1(4x + 2) = 31

Reorder the terms:
7x + -1(2 + 4x) = 31
7x + (2 * -1 + 4x * -1) = 31
7x + (-2 + -4x) = 31

Reorder the terms:
-2 + 7x + -4x = 31

Combine like terms: 7x + -4x = 3x
-2 + 3x = 31

Solving
-2 + 3x = 31

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + 3x = 31 + 2

Combine like terms: -2 + 2 = 0
0 + 3x = 31 + 2
3x = 31 + 2

Combine like terms: 31 + 2 = 33
3x = 33

Divide each side by '3'.
x = 11

Simplifying
x = 11

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