x+2(3x-7)=21

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Solution for x+2(3x-7)=21 equation:


Simplifying
x + 2(3x + -7) = 21

Reorder the terms:
x + 2(-7 + 3x) = 21
x + (-7 * 2 + 3x * 2) = 21
x + (-14 + 6x) = 21

Reorder the terms:
-14 + x + 6x = 21

Combine like terms: x + 6x = 7x
-14 + 7x = 21

Solving
-14 + 7x = 21

Solving for variable 'x'.

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

Add '14' to each side of the equation.
-14 + 14 + 7x = 21 + 14

Combine like terms: -14 + 14 = 0
0 + 7x = 21 + 14
7x = 21 + 14

Combine like terms: 21 + 14 = 35
7x = 35

Divide each side by '7'.
x = 5

Simplifying
x = 5

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