3x+7(-3x-1)=-63

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Solution for 3x+7(-3x-1)=-63 equation:


Simplifying
3x + 7(-3x + -1) = -63

Reorder the terms:
3x + 7(-1 + -3x) = -63
3x + (-1 * 7 + -3x * 7) = -63
3x + (-7 + -21x) = -63

Reorder the terms:
-7 + 3x + -21x = -63

Combine like terms: 3x + -21x = -18x
-7 + -18x = -63

Solving
-7 + -18x = -63

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + -18x = -63 + 7

Combine like terms: -7 + 7 = 0
0 + -18x = -63 + 7
-18x = -63 + 7

Combine like terms: -63 + 7 = -56
-18x = -56

Divide each side by '-18'.
x = 3.111111111

Simplifying
x = 3.111111111

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