4x+3(x+7)=105

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Solution for 4x+3(x+7)=105 equation:


Simplifying
4x + 3(x + 7) = 105

Reorder the terms:
4x + 3(7 + x) = 105
4x + (7 * 3 + x * 3) = 105
4x + (21 + 3x) = 105

Reorder the terms:
21 + 4x + 3x = 105

Combine like terms: 4x + 3x = 7x
21 + 7x = 105

Solving
21 + 7x = 105

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 + 7x = 105 + -21

Combine like terms: 21 + -21 = 0
0 + 7x = 105 + -21
7x = 105 + -21

Combine like terms: 105 + -21 = 84
7x = 84

Divide each side by '7'.
x = 12

Simplifying
x = 12

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