36=0.9(x+90)

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Solution for 36=0.9(x+90) equation: 


Simplifying
36 = 0.9(x + 90)

Reorder the terms:
36 = 0.9(90 + x)
36 = (90 * 0.9 + x * 0.9)
36 = (81 + 0.9x)

Solving
36 = 81 + 0.9x

Solving for variable 'x'.

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

Add '-0.9x' to each side of the equation.
36 + -0.9x = 81 + 0.9x + -0.9x

Combine like terms: 0.9x + -0.9x = 0.0
36 + -0.9x = 81 + 0.0
36 + -0.9x = 81

Add '-36' to each side of the equation.
36 + -36 + -0.9x = 81 + -36

Combine like terms: 36 + -36 = 0
0 + -0.9x = 81 + -36
-0.9x = 81 + -36

Combine like terms: 81 + -36 = 45
-0.9x = 45

Divide each side by '-0.9'.
x = -50

Simplifying
x = -50

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