4x+7=21x-1

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Solution for 4x+7=21x-1 equation:


Simplifying
4x + 7 = 21x + -1

Reorder the terms:
7 + 4x = 21x + -1

Reorder the terms:
7 + 4x = -1 + 21x

Solving
7 + 4x = -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.
7 + 4x + -21x = -1 + 21x + -21x

Combine like terms: 4x + -21x = -17x
7 + -17x = -1 + 21x + -21x

Combine like terms: 21x + -21x = 0
7 + -17x = -1 + 0
7 + -17x = -1

Add '-7' to each side of the equation.
7 + -7 + -17x = -1 + -7

Combine like terms: 7 + -7 = 0
0 + -17x = -1 + -7
-17x = -1 + -7

Combine like terms: -1 + -7 = -8
-17x = -8

Divide each side by '-17'.
x = 0.4705882353

Simplifying
x = 0.4705882353

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