7+0.5(5-y)=1.2y-4(y-0.4)

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Solution for 7+0.5(5-y)=1.2y-4(y-0.4) equation:


Simplifying
7 + 0.5(5 + -1y) = 1.2y + -4(y + -0.4)
7 + (5 * 0.5 + -1y * 0.5) = 1.2y + -4(y + -0.4)
7 + (2.5 + -0.5y) = 1.2y + -4(y + -0.4)

Combine like terms: 7 + 2.5 = 9.5
9.5 + -0.5y = 1.2y + -4(y + -0.4)

Reorder the terms:
9.5 + -0.5y = 1.2y + -4(-0.4 + y)
9.5 + -0.5y = 1.2y + (-0.4 * -4 + y * -4)
9.5 + -0.5y = 1.2y + (1.6 + -4y)

Reorder the terms:
9.5 + -0.5y = 1.6 + 1.2y + -4y

Combine like terms: 1.2y + -4y = -2.8y
9.5 + -0.5y = 1.6 + -2.8y

Solving
9.5 + -0.5y = 1.6 + -2.8y

Solving for variable 'y'.

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

Add '2.8y' to each side of the equation.
9.5 + -0.5y + 2.8y = 1.6 + -2.8y + 2.8y

Combine like terms: -0.5y + 2.8y = 2.3y
9.5 + 2.3y = 1.6 + -2.8y + 2.8y

Combine like terms: -2.8y + 2.8y = 0.0
9.5 + 2.3y = 1.6 + 0.0
9.5 + 2.3y = 1.6

Add '-9.5' to each side of the equation.
9.5 + -9.5 + 2.3y = 1.6 + -9.5

Combine like terms: 9.5 + -9.5 = 0.0
0.0 + 2.3y = 1.6 + -9.5
2.3y = 1.6 + -9.5

Combine like terms: 1.6 + -9.5 = -7.9
2.3y = -7.9

Divide each side by '2.3'.
y = -3.434782609

Simplifying
y = -3.434782609

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