121=21x+100

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Solution for 121=21x+100 equation:


Simplifying
121 = 21x + 100

Reorder the terms:
121 = 100 + 21x

Solving
121 = 100 + 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.
121 + -21x = 100 + 21x + -21x

Combine like terms: 21x + -21x = 0
121 + -21x = 100 + 0
121 + -21x = 100

Add '-121' to each side of the equation.
121 + -121 + -21x = 100 + -121

Combine like terms: 121 + -121 = 0
0 + -21x = 100 + -121
-21x = 100 + -121

Combine like terms: 100 + -121 = -21
-21x = -21

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

Simplifying
x = 1

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