8(10-4y)+15=(-y-7)(3)

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Solution for 8(10-4y)+15=(-y-7)(3) equation:


Simplifying
8(10 + -4y) + 15 = (-1y + -7)(3)
(10 * 8 + -4y * 8) + 15 = (-1y + -7)(3)
(80 + -32y) + 15 = (-1y + -7)(3)

Reorder the terms:
80 + 15 + -32y = (-1y + -7)(3)

Combine like terms: 80 + 15 = 95
95 + -32y = (-1y + -7)(3)

Reorder the terms:
95 + -32y = (-7 + -1y)(3)

Reorder the terms for easier multiplication:
95 + -32y = 3(-7 + -1y)
95 + -32y = (-7 * 3 + -1y * 3)
95 + -32y = (-21 + -3y)

Solving
95 + -32y = -21 + -3y

Solving for variable 'y'.

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

Add '3y' to each side of the equation.
95 + -32y + 3y = -21 + -3y + 3y

Combine like terms: -32y + 3y = -29y
95 + -29y = -21 + -3y + 3y

Combine like terms: -3y + 3y = 0
95 + -29y = -21 + 0
95 + -29y = -21

Add '-95' to each side of the equation.
95 + -95 + -29y = -21 + -95

Combine like terms: 95 + -95 = 0
0 + -29y = -21 + -95
-29y = -21 + -95

Combine like terms: -21 + -95 = -116
-29y = -116

Divide each side by '-29'.
y = 4

Simplifying
y = 4

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