.4(9y-2)+.8(6y+9)=

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Solution for .4(9y-2)+.8(6y+9)= equation:


Simplifying
0.4(9y + -2) + 0.8(6y + 9) = 0

Reorder the terms:
0.4(-2 + 9y) + 0.8(6y + 9) = 0
(-2 * 0.4 + 9y * 0.4) + 0.8(6y + 9) = 0
(-0.8 + 3.6y) + 0.8(6y + 9) = 0

Reorder the terms:
-0.8 + 3.6y + 0.8(9 + 6y) = 0
-0.8 + 3.6y + (9 * 0.8 + 6y * 0.8) = 0
-0.8 + 3.6y + (7.2 + 4.8y) = 0

Reorder the terms:
-0.8 + 7.2 + 3.6y + 4.8y = 0

Combine like terms: -0.8 + 7.2 = 6.4
6.4 + 3.6y + 4.8y = 0

Combine like terms: 3.6y + 4.8y = 8.4y
6.4 + 8.4y = 0

Solving
6.4 + 8.4y = 0

Solving for variable 'y'.

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

Add '-6.4' to each side of the equation.
6.4 + -6.4 + 8.4y = 0 + -6.4

Combine like terms: 6.4 + -6.4 = 0.0
0.0 + 8.4y = 0 + -6.4
8.4y = 0 + -6.4

Combine like terms: 0 + -6.4 = -6.4
8.4y = -6.4

Divide each side by '8.4'.
y = -0.7619047619

Simplifying
y = -0.7619047619

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