2(3x+4)=78-x

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Solution for 2(3x+4)=78-x equation:


Simplifying
2(3x + 4) = 78 + -1x

Reorder the terms:
2(4 + 3x) = 78 + -1x
(4 * 2 + 3x * 2) = 78 + -1x
(8 + 6x) = 78 + -1x

Solving
8 + 6x = 78 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
8 + 6x + x = 78 + -1x + x

Combine like terms: 6x + x = 7x
8 + 7x = 78 + -1x + x

Combine like terms: -1x + x = 0
8 + 7x = 78 + 0
8 + 7x = 78

Add '-8' to each side of the equation.
8 + -8 + 7x = 78 + -8

Combine like terms: 8 + -8 = 0
0 + 7x = 78 + -8
7x = 78 + -8

Combine like terms: 78 + -8 = 70
7x = 70

Divide each side by '7'.
x = 10

Simplifying
x = 10

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