7(x+11)-3x=21

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Solution for 7(x+11)-3x=21 equation:


Simplifying
7(x + 11) + -3x = 21

Reorder the terms:
7(11 + x) + -3x = 21
(11 * 7 + x * 7) + -3x = 21
(77 + 7x) + -3x = 21

Combine like terms: 7x + -3x = 4x
77 + 4x = 21

Solving
77 + 4x = 21

Solving for variable 'x'.

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

Add '-77' to each side of the equation.
77 + -77 + 4x = 21 + -77

Combine like terms: 77 + -77 = 0
0 + 4x = 21 + -77
4x = 21 + -77

Combine like terms: 21 + -77 = -56
4x = -56

Divide each side by '4'.
x = -14

Simplifying
x = -14

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