7(9+3x)=-147

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Solution for 7(9+3x)=-147 equation: 


Simplifying
7(9 + 3x) = -147
(9 * 7 + 3x * 7) = -147
(63 + 21x) = -147

Solving
63 + 21x = -147

Solving for variable 'x'.

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

Add '-63' to each side of the equation.
63 + -63 + 21x = -147 + -63

Combine like terms: 63 + -63 = 0
0 + 21x = -147 + -63
21x = -147 + -63

Combine like terms: -147 + -63 = -210
21x = -210

Divide each side by '21'.
x = -10

Simplifying
x = -10

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