(7x)-(4x)=30

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Solution for (7x)-(4x)=30 equation: 


Simplifying
(7x) + -1(4x) = 30

Remove parenthesis around (4x)
(7x) + -1 * 4x = 30

Multiply -1 * 4
(7x) + -4x = 30

Combine like terms: (7x) + -4x = 3x
3x = 30

Solving
3x = 30

Solving for variable 'x'.

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

Divide each side by '3'.
x = 10

Simplifying
x = 10

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