7(x+3)-3(x-9)=64

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Solution for 7(x+3)-3(x-9)=64 equation:


Simplifying
7(x + 3) + -3(x + -9) = 64

Reorder the terms:
7(3 + x) + -3(x + -9) = 64
(3 * 7 + x * 7) + -3(x + -9) = 64
(21 + 7x) + -3(x + -9) = 64

Reorder the terms:
21 + 7x + -3(-9 + x) = 64
21 + 7x + (-9 * -3 + x * -3) = 64
21 + 7x + (27 + -3x) = 64

Reorder the terms:
21 + 27 + 7x + -3x = 64

Combine like terms: 21 + 27 = 48
48 + 7x + -3x = 64

Combine like terms: 7x + -3x = 4x
48 + 4x = 64

Solving
48 + 4x = 64

Solving for variable 'x'.

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

Add '-48' to each side of the equation.
48 + -48 + 4x = 64 + -48

Combine like terms: 48 + -48 = 0
0 + 4x = 64 + -48
4x = 64 + -48

Combine like terms: 64 + -48 = 16
4x = 16

Divide each side by '4'.
x = 4

Simplifying
x = 4

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