7y-3(2y+5)=7-(10-10y)

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Solution for 7y-3(2y+5)=7-(10-10y) equation:


Simplifying
7y + -3(2y + 5) = 7 + -1(10 + -10y)

Reorder the terms:
7y + -3(5 + 2y) = 7 + -1(10 + -10y)
7y + (5 * -3 + 2y * -3) = 7 + -1(10 + -10y)
7y + (-15 + -6y) = 7 + -1(10 + -10y)

Reorder the terms:
-15 + 7y + -6y = 7 + -1(10 + -10y)

Combine like terms: 7y + -6y = 1y
-15 + 1y = 7 + -1(10 + -10y)
-15 + 1y = 7 + (10 * -1 + -10y * -1)
-15 + 1y = 7 + (-10 + 10y)

Combine like terms: 7 + -10 = -3
-15 + 1y = -3 + 10y

Solving
-15 + 1y = -3 + 10y

Solving for variable 'y'.

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

Add '-10y' to each side of the equation.
-15 + 1y + -10y = -3 + 10y + -10y

Combine like terms: 1y + -10y = -9y
-15 + -9y = -3 + 10y + -10y

Combine like terms: 10y + -10y = 0
-15 + -9y = -3 + 0
-15 + -9y = -3

Add '15' to each side of the equation.
-15 + 15 + -9y = -3 + 15

Combine like terms: -15 + 15 = 0
0 + -9y = -3 + 15
-9y = -3 + 15

Combine like terms: -3 + 15 = 12
-9y = 12

Divide each side by '-9'.
y = -1.333333333

Simplifying
y = -1.333333333

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