3(1+-0.5y)+4y=-7

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Solution for 3(1+-0.5y)+4y=-7 equation: 


Simplifying
3(1 + -0.5y) + 4y = -7
(1 * 3 + -0.5y * 3) + 4y = -7
(3 + -1.5y) + 4y = -7

Combine like terms: -1.5y + 4y = 2.5y
3 + 2.5y = -7

Solving
3 + 2.5y = -7

Solving for variable 'y'.

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

Add '-3' to each side of the equation.
3 + -3 + 2.5y = -7 + -3

Combine like terms: 3 + -3 = 0
0 + 2.5y = -7 + -3
2.5y = -7 + -3

Combine like terms: -7 + -3 = -10
2.5y = -10

Divide each side by '2.5'.
y = -4

Simplifying
y = -4

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