4x-7(x+3)=-18

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Solution for 4x-7(x+3)=-18 equation:


Simplifying
4x + -7(x + 3) = -18

Reorder the terms:
4x + -7(3 + x) = -18
4x + (3 * -7 + x * -7) = -18
4x + (-21 + -7x) = -18

Reorder the terms:
-21 + 4x + -7x = -18

Combine like terms: 4x + -7x = -3x
-21 + -3x = -18

Solving
-21 + -3x = -18

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 + -3x = -18 + 21

Combine like terms: -21 + 21 = 0
0 + -3x = -18 + 21
-3x = -18 + 21

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

Divide each side by '-3'.
x = -1

Simplifying
x = -1

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