3x+40=61

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Solution for 3x+40=61 equation: 


Simplifying
3x + 40 = 61

Reorder the terms:
40 + 3x = 61

Solving
40 + 3x = 61

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 + 3x = 61 + -40

Combine like terms: 40 + -40 = 0
0 + 3x = 61 + -40
3x = 61 + -40

Combine like terms: 61 + -40 = 21
3x = 21

Divide each side by '3'.
x = 7

Simplifying
x = 7

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