3=3-7(x+3)

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


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

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

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

Solving
3 = -18 + -7x

Solving for variable 'x'.

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

Add '7x' to each side of the equation.
3 + 7x = -18 + -7x + 7x

Combine like terms: -7x + 7x = 0
3 + 7x = -18 + 0
3 + 7x = -18

Add '-3' to each side of the equation.
3 + -3 + 7x = -18 + -3

Combine like terms: 3 + -3 = 0
0 + 7x = -18 + -3
7x = -18 + -3

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

Divide each side by '7'.
x = -3

Simplifying
x = -3

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