21+25x=42+18x

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Solution for 21+25x=42+18x equation:


Simplifying
21 + 25x = 42 + 18x

Solving
21 + 25x = 42 + 18x

Solving for variable 'x'.

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

Add '-18x' to each side of the equation.
21 + 25x + -18x = 42 + 18x + -18x

Combine like terms: 25x + -18x = 7x
21 + 7x = 42 + 18x + -18x

Combine like terms: 18x + -18x = 0
21 + 7x = 42 + 0
21 + 7x = 42

Add '-21' to each side of the equation.
21 + -21 + 7x = 42 + -21

Combine like terms: 21 + -21 = 0
0 + 7x = 42 + -21
7x = 42 + -21

Combine like terms: 42 + -21 = 21
7x = 21

Divide each side by '7'.
x = 3

Simplifying
x = 3

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