10y-5-3(2y+5)=20

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Solution for 10y-5-3(2y+5)=20 equation:


Simplifying
10y + -5 + -3(2y + 5) = 20

Reorder the terms:
10y + -5 + -3(5 + 2y) = 20
10y + -5 + (5 * -3 + 2y * -3) = 20
10y + -5 + (-15 + -6y) = 20

Reorder the terms:
-5 + -15 + 10y + -6y = 20

Combine like terms: -5 + -15 = -20
-20 + 10y + -6y = 20

Combine like terms: 10y + -6y = 4y
-20 + 4y = 20

Solving
-20 + 4y = 20

Solving for variable 'y'.

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

Add '20' to each side of the equation.
-20 + 20 + 4y = 20 + 20

Combine like terms: -20 + 20 = 0
0 + 4y = 20 + 20
4y = 20 + 20

Combine like terms: 20 + 20 = 40
4y = 40

Divide each side by '4'.
y = 10

Simplifying
y = 10

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