65-4x=7x+21

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Solution for 65-4x=7x+21 equation:


Simplifying
65 + -4x = 7x + 21

Reorder the terms:
65 + -4x = 21 + 7x

Solving
65 + -4x = 21 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
65 + -4x + -7x = 21 + 7x + -7x

Combine like terms: -4x + -7x = -11x
65 + -11x = 21 + 7x + -7x

Combine like terms: 7x + -7x = 0
65 + -11x = 21 + 0
65 + -11x = 21

Add '-65' to each side of the equation.
65 + -65 + -11x = 21 + -65

Combine like terms: 65 + -65 = 0
0 + -11x = 21 + -65
-11x = 21 + -65

Combine like terms: 21 + -65 = -44
-11x = -44

Divide each side by '-11'.
x = 4

Simplifying
x = 4

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