19=10y-21

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Solution for 19=10y-21 equation:


Simplifying
19 = 10y + -21

Reorder the terms:
19 = -21 + 10y

Solving
19 = -21 + 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.
19 + -10y = -21 + 10y + -10y

Combine like terms: 10y + -10y = 0
19 + -10y = -21 + 0
19 + -10y = -21

Add '-19' to each side of the equation.
19 + -19 + -10y = -21 + -19

Combine like terms: 19 + -19 = 0
0 + -10y = -21 + -19
-10y = -21 + -19

Combine like terms: -21 + -19 = -40
-10y = -40

Divide each side by '-10'.
y = 4

Simplifying
y = 4

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