3(x-4)+7x=78

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Solution for 3(x-4)+7x=78 equation:


Simplifying
3(x + -4) + 7x = 78

Reorder the terms:
3(-4 + x) + 7x = 78
(-4 * 3 + x * 3) + 7x = 78
(-12 + 3x) + 7x = 78

Combine like terms: 3x + 7x = 10x
-12 + 10x = 78

Solving
-12 + 10x = 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 + 10x = 78 + 12

Combine like terms: -12 + 12 = 0
0 + 10x = 78 + 12
10x = 78 + 12

Combine like terms: 78 + 12 = 90
10x = 90

Divide each side by '10'.
x = 9

Simplifying
x = 9

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