3(8.2-x)+7(-x-0.2)=0

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Solution for 3(8.2-x)+7(-x-0.2)=0 equation:


Simplifying
3(8.2 + -1x) + 7(-1x + -0.2) = 0
(8.2 * 3 + -1x * 3) + 7(-1x + -0.2) = 0
(24.6 + -3x) + 7(-1x + -0.2) = 0

Reorder the terms:
24.6 + -3x + 7(-0.2 + -1x) = 0
24.6 + -3x + (-0.2 * 7 + -1x * 7) = 0
24.6 + -3x + (-1.4 + -7x) = 0

Reorder the terms:
24.6 + -1.4 + -3x + -7x = 0

Combine like terms: 24.6 + -1.4 = 23.2
23.2 + -3x + -7x = 0

Combine like terms: -3x + -7x = -10x
23.2 + -10x = 0

Solving
23.2 + -10x = 0

Solving for variable 'x'.

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

Add '-23.2' to each side of the equation.
23.2 + -23.2 + -10x = 0 + -23.2

Combine like terms: 23.2 + -23.2 = 0.0
0.0 + -10x = 0 + -23.2
-10x = 0 + -23.2

Combine like terms: 0 + -23.2 = -23.2
-10x = -23.2

Divide each side by '-10'.
x = 2.32

Simplifying
x = 2.32

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