7x-3(7-x)=12

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Solution for 7x-3(7-x)=12 equation:


Simplifying
7x + -3(7 + -1x) = 12
7x + (7 * -3 + -1x * -3) = 12
7x + (-21 + 3x) = 12

Reorder the terms:
-21 + 7x + 3x = 12

Combine like terms: 7x + 3x = 10x
-21 + 10x = 12

Solving
-21 + 10x = 12

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 + 10x = 12 + 21

Combine like terms: -21 + 21 = 0
0 + 10x = 12 + 21
10x = 12 + 21

Combine like terms: 12 + 21 = 33
10x = 33

Divide each side by '10'.
x = 3.3

Simplifying
x = 3.3

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