2x+7+3(x+7)=78

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Solution for 2x+7+3(x+7)=78 equation:


Simplifying
2x + 7 + 3(x + 7) = 78

Reorder the terms:
2x + 7 + 3(7 + x) = 78
2x + 7 + (7 * 3 + x * 3) = 78
2x + 7 + (21 + 3x) = 78

Reorder the terms:
7 + 21 + 2x + 3x = 78

Combine like terms: 7 + 21 = 28
28 + 2x + 3x = 78

Combine like terms: 2x + 3x = 5x
28 + 5x = 78

Solving
28 + 5x = 78

Solving for variable 'x'.

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

Add '-28' to each side of the equation.
28 + -28 + 5x = 78 + -28

Combine like terms: 28 + -28 = 0
0 + 5x = 78 + -28
5x = 78 + -28

Combine like terms: 78 + -28 = 50
5x = 50

Divide each side by '5'.
x = 10

Simplifying
x = 10

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