21x-18=17x+7

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Solution for 21x-18=17x+7 equation:


Simplifying
21x + -18 = 17x + 7

Reorder the terms:
-18 + 21x = 17x + 7

Reorder the terms:
-18 + 21x = 7 + 17x

Solving
-18 + 21x = 7 + 17x

Solving for variable 'x'.

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

Add '-17x' to each side of the equation.
-18 + 21x + -17x = 7 + 17x + -17x

Combine like terms: 21x + -17x = 4x
-18 + 4x = 7 + 17x + -17x

Combine like terms: 17x + -17x = 0
-18 + 4x = 7 + 0
-18 + 4x = 7

Add '18' to each side of the equation.
-18 + 18 + 4x = 7 + 18

Combine like terms: -18 + 18 = 0
0 + 4x = 7 + 18
4x = 7 + 18

Combine like terms: 7 + 18 = 25
4x = 25

Divide each side by '4'.
x = 6.25

Simplifying
x = 6.25

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