7x-3(x+7)=-64

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Solution for 7x-3(x+7)=-64 equation:


Simplifying
7x + -3(x + 7) = -64

Reorder the terms:
7x + -3(7 + x) = -64
7x + (7 * -3 + x * -3) = -64
7x + (-21 + -3x) = -64

Reorder the terms:
-21 + 7x + -3x = -64

Combine like terms: 7x + -3x = 4x
-21 + 4x = -64

Solving
-21 + 4x = -64

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 + 4x = -64 + 21

Combine like terms: -21 + 21 = 0
0 + 4x = -64 + 21
4x = -64 + 21

Combine like terms: -64 + 21 = -43
4x = -43

Divide each side by '4'.
x = -10.75

Simplifying
x = -10.75

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