7x-19=3x+21

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Solution for 7x-19=3x+21 equation:


Simplifying
7x + -19 = 3x + 21

Reorder the terms:
-19 + 7x = 3x + 21

Reorder the terms:
-19 + 7x = 21 + 3x

Solving
-19 + 7x = 21 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
-19 + 7x + -3x = 21 + 3x + -3x

Combine like terms: 7x + -3x = 4x
-19 + 4x = 21 + 3x + -3x

Combine like terms: 3x + -3x = 0
-19 + 4x = 21 + 0
-19 + 4x = 21

Add '19' to each side of the equation.
-19 + 19 + 4x = 21 + 19

Combine like terms: -19 + 19 = 0
0 + 4x = 21 + 19
4x = 21 + 19

Combine like terms: 21 + 19 = 40
4x = 40

Divide each side by '4'.
x = 10

Simplifying
x = 10

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