10x+21(X-5)=81

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Solution for 10x+21(X-5)=81 equation:


Simplifying
10x + 21(X + -5) = 81

Reorder the terms:
10x + 21(-5 + X) = 81
10x + (-5 * 21 + X * 21) = 81
10x + (-105 + 21X) = 81

Reorder the terms:
-105 + 21X + 10x = 81

Solving
-105 + 21X + 10x = 81

Solving for variable 'X'.

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

Add '105' to each side of the equation.
-105 + 21X + 105 + 10x = 81 + 105

Reorder the terms:
-105 + 105 + 21X + 10x = 81 + 105

Combine like terms: -105 + 105 = 0
0 + 21X + 10x = 81 + 105
21X + 10x = 81 + 105

Combine like terms: 81 + 105 = 186
21X + 10x = 186

Add '-10x' to each side of the equation.
21X + 10x + -10x = 186 + -10x

Combine like terms: 10x + -10x = 0
21X + 0 = 186 + -10x
21X = 186 + -10x

Divide each side by '21'.
X = 8.857142857 + -0.4761904762x

Simplifying
X = 8.857142857 + -0.4761904762x

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