21x+40=124

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Solution for 21x+40=124 equation: 


Simplifying
21x + 40 = 124

Reorder the terms:
40 + 21x = 124

Solving
40 + 21x = 124

Solving for variable 'x'.

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

Add '-40' to each side of the equation.
40 + -40 + 21x = 124 + -40

Combine like terms: 40 + -40 = 0
0 + 21x = 124 + -40
21x = 124 + -40

Combine like terms: 124 + -40 = 84
21x = 84

Divide each side by '21'.
x = 4

Simplifying
x = 4

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