7x-3(x-1)=31

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Solution for 7x-3(x-1)=31 equation:


Simplifying
7x + -3(x + -1) = 31

Reorder the terms:
7x + -3(-1 + x) = 31
7x + (-1 * -3 + x * -3) = 31
7x + (3 + -3x) = 31

Reorder the terms:
3 + 7x + -3x = 31

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

Solving
3 + 4x = 31

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 4x = 31 + -3

Combine like terms: 3 + -3 = 0
0 + 4x = 31 + -3
4x = 31 + -3

Combine like terms: 31 + -3 = 28
4x = 28

Divide each side by '4'.
x = 7

Simplifying
x = 7

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