0.4y^2+0.7y^2-0.2y^2=

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Solution for 0.4y^2+0.7y^2-0.2y^2= equation: 


Simplifying
0.4y2 + 0.7y2 + -0.2y2 = 0

Combine like terms: 0.4y2 + 0.7y2 = 1.1y2
1.1y2 + -0.2y2 = 0

Combine like terms: 1.1y2 + -0.2y2 = 0.9y2
0.9y2 = 0

Solving
0.9y2 = 0

Solving for variable 'y'.

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

Divide each side by '0.9'.
y2 = 0

Simplifying
y2 = 0

Take the square root of each side:
y = {0}

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