0.12y+0.03(y+4000)=720

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Solution for 0.12y+0.03(y+4000)=720 equation: 


Simplifying
0.12y + 0.03(y + 4000) = 720

Reorder the terms:
0.12y + 0.03(4000 + y) = 720
0.12y + (4000 * 0.03 + y * 0.03) = 720
0.12y + (120 + 0.03y) = 720

Reorder the terms:
120 + 0.12y + 0.03y = 720

Combine like terms: 0.12y + 0.03y = 0.15y
120 + 0.15y = 720

Solving
120 + 0.15y = 720

Solving for variable 'y'.

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

Add '-120' to each side of the equation.
120 + -120 + 0.15y = 720 + -120

Combine like terms: 120 + -120 = 0
0 + 0.15y = 720 + -120
0.15y = 720 + -120

Combine like terms: 720 + -120 = 600
0.15y = 600

Divide each side by '0.15'.
y = 4000

Simplifying
y = 4000

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