21y+12-25y-10=-2

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Solution for 21y+12-25y-10=-2 equation:


Simplifying
21y + 12 + -25y + -10 = -2

Reorder the terms:
12 + -10 + 21y + -25y = -2

Combine like terms: 12 + -10 = 2
2 + 21y + -25y = -2

Combine like terms: 21y + -25y = -4y
2 + -4y = -2

Solving
2 + -4y = -2

Solving for variable 'y'.

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

Add '-2' to each side of the equation.
2 + -2 + -4y = -2 + -2

Combine like terms: 2 + -2 = 0
0 + -4y = -2 + -2
-4y = -2 + -2

Combine like terms: -2 + -2 = -4
-4y = -4

Divide each side by '-4'.
y = 1

Simplifying
y = 1

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