3(x+3)=21x-1

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Solution for 3(x+3)=21x-1 equation:


Simplifying
3(x + 3) = 21x + -1

Reorder the terms:
3(3 + x) = 21x + -1
(3 * 3 + x * 3) = 21x + -1
(9 + 3x) = 21x + -1

Reorder the terms:
9 + 3x = -1 + 21x

Solving
9 + 3x = -1 + 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.
9 + 3x + -21x = -1 + 21x + -21x

Combine like terms: 3x + -21x = -18x
9 + -18x = -1 + 21x + -21x

Combine like terms: 21x + -21x = 0
9 + -18x = -1 + 0
9 + -18x = -1

Add '-9' to each side of the equation.
9 + -9 + -18x = -1 + -9

Combine like terms: 9 + -9 = 0
0 + -18x = -1 + -9
-18x = -1 + -9

Combine like terms: -1 + -9 = -10
-18x = -10

Divide each side by '-18'.
x = 0.5555555556

Simplifying
x = 0.5555555556

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