0.08x+0.09(9000-x)=780

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Solution for 0.08x+0.09(9000-x)=780 equation:


Simplifying
0.08x + 0.09(9000 + -1x) = 780
0.08x + (9000 * 0.09 + -1x * 0.09) = 780
0.08x + (810 + -0.09x) = 780

Reorder the terms:
810 + 0.08x + -0.09x = 780

Combine like terms: 0.08x + -0.09x = -0.01x
810 + -0.01x = 780

Solving
810 + -0.01x = 780

Solving for variable 'x'.

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

Add '-810' to each side of the equation.
810 + -810 + -0.01x = 780 + -810

Combine like terms: 810 + -810 = 0
0 + -0.01x = 780 + -810
-0.01x = 780 + -810

Combine like terms: 780 + -810 = -30
-0.01x = -30

Divide each side by '-0.01'.
x = 3000

Simplifying
x = 3000

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