0.06(30000-y)+0.09y=2100

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Solution for 0.06(30000-y)+0.09y=2100 equation:


Simplifying
0.06(30000 + -1y) + 0.09y = 2100
(30000 * 0.06 + -1y * 0.06) + 0.09y = 2100
(1800 + -0.06y) + 0.09y = 2100

Combine like terms: -0.06y + 0.09y = 0.03y
1800 + 0.03y = 2100

Solving
1800 + 0.03y = 2100

Solving for variable 'y'.

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

Add '-1800' to each side of the equation.
1800 + -1800 + 0.03y = 2100 + -1800

Combine like terms: 1800 + -1800 = 0
0 + 0.03y = 2100 + -1800
0.03y = 2100 + -1800

Combine like terms: 2100 + -1800 = 300
0.03y = 300

Divide each side by '0.03'.
y = 10000

Simplifying
y = 10000

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