1220X*0.9X=1620

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Solution for 1220X*0.9X=1620 equation: 


Simplifying
1220X * 0.9X = 1620

Reorder the terms for easier multiplication:
1220 * 0.9X * X = 1620

Multiply 1220 * 0.9
1098X * X = 1620

Multiply X * X
1098X2 = 1620

Solving
1098X2 = 1620

Solving for variable 'X'.

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

Divide each side by '1098'.
X2 = 1.475409836

Simplifying
X2 = 1.475409836

Take the square root of each side:
X = {-1.214664495, 1.214664495}

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