-0.4=a+(-1.3)

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Solution for -0.4=a+(-1.3) equation:


Simplifying
-0.4 = a + (-1.3)
-0.4 = a + -1.3

Reorder the terms:
-0.4 = -1.3 + a

Solving
-0.4 = -1.3 + 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.
-0.4 + -1a = -1.3 + a + -1a

Combine like terms: a + -1a = 0
-0.4 + -1a = -1.3 + 0
-0.4 + -1a = -1.3

Add '0.4' to each side of the equation.
-0.4 + 0.4 + -1a = -1.3 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + -1a = -1.3 + 0.4
-1a = -1.3 + 0.4

Combine like terms: -1.3 + 0.4 = -0.9
-1a = -0.9

Divide each side by '-1'.
a = 0.9

Simplifying
a = 0.9

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