(10*9+5*5)=x

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Solution for (10*9+5*5)=x equation:


Simplifying
(10 * 9 + 5 * 5) = x

Multiply 10 * 9
(90 + 5 * 5) = x

Multiply 5 * 5
(90 + 25) = x

Combine like terms: 90 + 25 = 115
(115) = x
115 = x

Solving
115 = 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.
115 + -1x = x + -1x

Combine like terms: x + -1x = 0
115 + -1x = 0

Add '-115' to each side of the equation.
115 + -115 + -1x = 0 + -115

Combine like terms: 115 + -115 = 0
0 + -1x = 0 + -115
-1x = 0 + -115

Combine like terms: 0 + -115 = -115
-1x = -115

Divide each side by '-1'.
x = 115

Simplifying
x = 115

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