15=21x+36

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Solution for 15=21x+36 equation:


Simplifying
15 = 21x + 36

Reorder the terms:
15 = 36 + 21x

Solving
15 = 36 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
15 + -21x = 36 + 21x + -21x

Combine like terms: 21x + -21x = 0
15 + -21x = 36 + 0
15 + -21x = 36

Add '-15' to each side of the equation.
15 + -15 + -21x = 36 + -15

Combine like terms: 15 + -15 = 0
0 + -21x = 36 + -15
-21x = 36 + -15

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

Divide each side by '-21'.
x = -1

Simplifying
x = -1

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