7x+2(4x-6)=78

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Solution for 7x+2(4x-6)=78 equation:


Simplifying
7x + 2(4x + -6) = 78

Reorder the terms:
7x + 2(-6 + 4x) = 78
7x + (-6 * 2 + 4x * 2) = 78
7x + (-12 + 8x) = 78

Reorder the terms:
-12 + 7x + 8x = 78

Combine like terms: 7x + 8x = 15x
-12 + 15x = 78

Solving
-12 + 15x = 78

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 15x = 78 + 12

Combine like terms: -12 + 12 = 0
0 + 15x = 78 + 12
15x = 78 + 12

Combine like terms: 78 + 12 = 90
15x = 90

Divide each side by '15'.
x = 6

Simplifying
x = 6

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