21x+4=90

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Solution for 21x+4=90 equation:


Simplifying
21x + 4 = 90

Reorder the terms:
4 + 21x = 90

Solving
4 + 21x = 90

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 + 21x = 90 + -4

Combine like terms: 4 + -4 = 0
0 + 21x = 90 + -4
21x = 90 + -4

Combine like terms: 90 + -4 = 86
21x = 86

Divide each side by '21'.
x = 4.095238095

Simplifying
x = 4.095238095

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