8=-7(x+3)

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Solution for 8=-7(x+3) equation:


Simplifying
8 = -7(x + 3)

Reorder the terms:
8 = -7(3 + x)
8 = (3 * -7 + x * -7)
8 = (-21 + -7x)

Solving
8 = -21 + -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.
8 + 7x = -21 + -7x + 7x

Combine like terms: -7x + 7x = 0
8 + 7x = -21 + 0
8 + 7x = -21

Add '-8' to each side of the equation.
8 + -8 + 7x = -21 + -8

Combine like terms: 8 + -8 = 0
0 + 7x = -21 + -8
7x = -21 + -8

Combine like terms: -21 + -8 = -29
7x = -29

Divide each side by '7'.
x = -4.142857143

Simplifying
x = -4.142857143

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