21x-3+2x+7=72

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Solution for 21x-3+2x+7=72 equation:


Simplifying
21x + -3 + 2x + 7 = 72

Reorder the terms:
-3 + 7 + 21x + 2x = 72

Combine like terms: -3 + 7 = 4
4 + 21x + 2x = 72

Combine like terms: 21x + 2x = 23x
4 + 23x = 72

Solving
4 + 23x = 72

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 23x = 72 + -4

Combine like terms: 4 + -4 = 0
0 + 23x = 72 + -4
23x = 72 + -4

Combine like terms: 72 + -4 = 68
23x = 68

Divide each side by '23'.
x = 2.956521739

Simplifying
x = 2.956521739

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