3x+42x=21x+21

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Solution for 3x+42x=21x+21 equation:


Simplifying
3x + 42x = 21x + 21

Combine like terms: 3x + 42x = 45x
45x = 21x + 21

Reorder the terms:
45x = 21 + 21x

Solving
45x = 21 + 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.
45x + -21x = 21 + 21x + -21x

Combine like terms: 45x + -21x = 24x
24x = 21 + 21x + -21x

Combine like terms: 21x + -21x = 0
24x = 21 + 0
24x = 21

Divide each side by '24'.
x = 0.875

Simplifying
x = 0.875

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