21x-4=42x+17

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Solution for 21x-4=42x+17 equation:


Simplifying
21x + -4 = 42x + 17

Reorder the terms:
-4 + 21x = 42x + 17

Reorder the terms:
-4 + 21x = 17 + 42x

Solving
-4 + 21x = 17 + 42x

Solving for variable 'x'.

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

Add '-42x' to each side of the equation.
-4 + 21x + -42x = 17 + 42x + -42x

Combine like terms: 21x + -42x = -21x
-4 + -21x = 17 + 42x + -42x

Combine like terms: 42x + -42x = 0
-4 + -21x = 17 + 0
-4 + -21x = 17

Add '4' to each side of the equation.
-4 + 4 + -21x = 17 + 4

Combine like terms: -4 + 4 = 0
0 + -21x = 17 + 4
-21x = 17 + 4

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

Divide each side by '-21'.
x = -1

Simplifying
x = -1

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