21y+15=-3y+3

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Solution for 21y+15=-3y+3 equation:


Simplifying
21y + 15 = -3y + 3

Reorder the terms:
15 + 21y = -3y + 3

Reorder the terms:
15 + 21y = 3 + -3y

Solving
15 + 21y = 3 + -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.
15 + 21y + 3y = 3 + -3y + 3y

Combine like terms: 21y + 3y = 24y
15 + 24y = 3 + -3y + 3y

Combine like terms: -3y + 3y = 0
15 + 24y = 3 + 0
15 + 24y = 3

Add '-15' to each side of the equation.
15 + -15 + 24y = 3 + -15

Combine like terms: 15 + -15 = 0
0 + 24y = 3 + -15
24y = 3 + -15

Combine like terms: 3 + -15 = -12
24y = -12

Divide each side by '24'.
y = -0.5

Simplifying
y = -0.5

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