-20=-10+a

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Solution for -20=-10+a equation:


Simplifying
-20 = -10 + a

Solving
-20 = -10 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-20 + -1a = -10 + a + -1a

Combine like terms: a + -1a = 0
-20 + -1a = -10 + 0
-20 + -1a = -10

Add '20' to each side of the equation.
-20 + 20 + -1a = -10 + 20

Combine like terms: -20 + 20 = 0
0 + -1a = -10 + 20
-1a = -10 + 20

Combine like terms: -10 + 20 = 10
-1a = 10

Divide each side by '-1'.
a = -10

Simplifying
a = -10

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