21=36-30x

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Solution for 21=36-30x equation:


Simplifying
21 = 36 + -30x

Solving
21 = 36 + -30x

Solving for variable 'x'.

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

Add '30x' to each side of the equation.
21 + 30x = 36 + -30x + 30x

Combine like terms: -30x + 30x = 0
21 + 30x = 36 + 0
21 + 30x = 36

Add '-21' to each side of the equation.
21 + -21 + 30x = 36 + -21

Combine like terms: 21 + -21 = 0
0 + 30x = 36 + -21
30x = 36 + -21

Combine like terms: 36 + -21 = 15
30x = 15

Divide each side by '30'.
x = 0.5

Simplifying
x = 0.5

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