3(2y-5)=2(4y-3)-21

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Solution for 3(2y-5)=2(4y-3)-21 equation:


Simplifying
3(2y + -5) = 2(4y + -3) + -21

Reorder the terms:
3(-5 + 2y) = 2(4y + -3) + -21
(-5 * 3 + 2y * 3) = 2(4y + -3) + -21
(-15 + 6y) = 2(4y + -3) + -21

Reorder the terms:
-15 + 6y = 2(-3 + 4y) + -21
-15 + 6y = (-3 * 2 + 4y * 2) + -21
-15 + 6y = (-6 + 8y) + -21

Reorder the terms:
-15 + 6y = -6 + -21 + 8y

Combine like terms: -6 + -21 = -27
-15 + 6y = -27 + 8y

Solving
-15 + 6y = -27 + 8y

Solving for variable 'y'.

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

Add '-8y' to each side of the equation.
-15 + 6y + -8y = -27 + 8y + -8y

Combine like terms: 6y + -8y = -2y
-15 + -2y = -27 + 8y + -8y

Combine like terms: 8y + -8y = 0
-15 + -2y = -27 + 0
-15 + -2y = -27

Add '15' to each side of the equation.
-15 + 15 + -2y = -27 + 15

Combine like terms: -15 + 15 = 0
0 + -2y = -27 + 15
-2y = -27 + 15

Combine like terms: -27 + 15 = -12
-2y = -12

Divide each side by '-2'.
y = 6

Simplifying
y = 6

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