7(x+3)=45-3(12-k)

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Solution for 7(x+3)=45-3(12-k) equation:


Simplifying
7(x + 3) = 45 + -3(12 + -1k)

Reorder the terms:
7(3 + x) = 45 + -3(12 + -1k)
(3 * 7 + x * 7) = 45 + -3(12 + -1k)
(21 + 7x) = 45 + -3(12 + -1k)
21 + 7x = 45 + (12 * -3 + -1k * -3)
21 + 7x = 45 + (-36 + 3k)

Combine like terms: 45 + -36 = 9
21 + 7x = 9 + 3k

Solving
21 + 7x = 9 + 3k

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 7x = 9 + -21 + 3k

Combine like terms: 21 + -21 = 0
0 + 7x = 9 + -21 + 3k
7x = 9 + -21 + 3k

Combine like terms: 9 + -21 = -12
7x = -12 + 3k

Divide each side by '7'.
x = -1.714285714 + 0.4285714286k

Simplifying
x = -1.714285714 + 0.4285714286k

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