3(2x-4)+7(x-8)=40

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Solution for 3(2x-4)+7(x-8)=40 equation:


Simplifying
3(2x + -4) + 7(x + -8) = 40

Reorder the terms:
3(-4 + 2x) + 7(x + -8) = 40
(-4 * 3 + 2x * 3) + 7(x + -8) = 40
(-12 + 6x) + 7(x + -8) = 40

Reorder the terms:
-12 + 6x + 7(-8 + x) = 40
-12 + 6x + (-8 * 7 + x * 7) = 40
-12 + 6x + (-56 + 7x) = 40

Reorder the terms:
-12 + -56 + 6x + 7x = 40

Combine like terms: -12 + -56 = -68
-68 + 6x + 7x = 40

Combine like terms: 6x + 7x = 13x
-68 + 13x = 40

Solving
-68 + 13x = 40

Solving for variable 'x'.

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

Add '68' to each side of the equation.
-68 + 68 + 13x = 40 + 68

Combine like terms: -68 + 68 = 0
0 + 13x = 40 + 68
13x = 40 + 68

Combine like terms: 40 + 68 = 108
13x = 108

Divide each side by '13'.
x = 8.307692308

Simplifying
x = 8.307692308

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