7X+7(2X-6)=105

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Solution for 7X+7(2X-6)=105 equation:


Simplifying
7X + 7(2X + -6) = 105

Reorder the terms:
7X + 7(-6 + 2X) = 105
7X + (-6 * 7 + 2X * 7) = 105
7X + (-42 + 14X) = 105

Reorder the terms:
-42 + 7X + 14X = 105

Combine like terms: 7X + 14X = 21X
-42 + 21X = 105

Solving
-42 + 21X = 105

Solving for variable 'X'.

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

Add '42' to each side of the equation.
-42 + 42 + 21X = 105 + 42

Combine like terms: -42 + 42 = 0
0 + 21X = 105 + 42
21X = 105 + 42

Combine like terms: 105 + 42 = 147
21X = 147

Divide each side by '21'.
X = 7

Simplifying
X = 7

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