(25-x)+(20-x)+8=40

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Solution for (25-x)+(20-x)+8=40 equation:


Simplifying
(25 + -1x) + (20 + -1x) + 8 = 40

Remove parenthesis around (25 + -1x)
25 + -1x + (20 + -1x) + 8 = 40

Remove parenthesis around (20 + -1x)
25 + -1x + 20 + -1x + 8 = 40

Reorder the terms:
25 + 20 + 8 + -1x + -1x = 40

Combine like terms: 25 + 20 = 45
45 + 8 + -1x + -1x = 40

Combine like terms: 45 + 8 = 53
53 + -1x + -1x = 40

Combine like terms: -1x + -1x = -2x
53 + -2x = 40

Solving
53 + -2x = 40

Solving for variable 'x'.

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

Add '-53' to each side of the equation.
53 + -53 + -2x = 40 + -53

Combine like terms: 53 + -53 = 0
0 + -2x = 40 + -53
-2x = 40 + -53

Combine like terms: 40 + -53 = -13
-2x = -13

Divide each side by '-2'.
x = 6.5

Simplifying
x = 6.5

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