21(x+1)-14(x-1)=12

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Solution for 21(x+1)-14(x-1)=12 equation:


Simplifying
21(x + 1) + -14(x + -1) = 12

Reorder the terms:
21(1 + x) + -14(x + -1) = 12
(1 * 21 + x * 21) + -14(x + -1) = 12
(21 + 21x) + -14(x + -1) = 12

Reorder the terms:
21 + 21x + -14(-1 + x) = 12
21 + 21x + (-1 * -14 + x * -14) = 12
21 + 21x + (14 + -14x) = 12

Reorder the terms:
21 + 14 + 21x + -14x = 12

Combine like terms: 21 + 14 = 35
35 + 21x + -14x = 12

Combine like terms: 21x + -14x = 7x
35 + 7x = 12

Solving
35 + 7x = 12

Solving for variable 'x'.

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

Add '-35' to each side of the equation.
35 + -35 + 7x = 12 + -35

Combine like terms: 35 + -35 = 0
0 + 7x = 12 + -35
7x = 12 + -35

Combine like terms: 12 + -35 = -23
7x = -23

Divide each side by '7'.
x = -3.285714286

Simplifying
x = -3.285714286

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