21-10+9-2t=

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Solution for 21-10+9-2t= equation:


Simplifying
21 + -10 + 9 + -2t = 0

Combine like terms: 21 + -10 = 11
11 + 9 + -2t = 0

Combine like terms: 11 + 9 = 20
20 + -2t = 0

Solving
20 + -2t = 0

Solving for variable 't'.

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

Add '-20' to each side of the equation.
20 + -20 + -2t = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -2t = 0 + -20
-2t = 0 + -20

Combine like terms: 0 + -20 = -20
-2t = -20

Divide each side by '-2'.
t = 10

Simplifying
t = 10

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