20+25=40+x

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Solution for 20+25=40+x equation:


Simplifying
20 + 25 = 40 + x

Combine like terms: 20 + 25 = 45
45 = 40 + x

Solving
45 = 40 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
45 + -1x = 40 + x + -1x

Combine like terms: x + -1x = 0
45 + -1x = 40 + 0
45 + -1x = 40

Add '-45' to each side of the equation.
45 + -45 + -1x = 40 + -45

Combine like terms: 45 + -45 = 0
0 + -1x = 40 + -45
-1x = 40 + -45

Combine like terms: 40 + -45 = -5
-1x = -5

Divide each side by '-1'.
x = 5

Simplifying
x = 5

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