2+0.2(a-1)=-1

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Solution for 2+0.2(a-1)=-1 equation: 


Simplifying
2 + 0.2(a + -1) = -1

Reorder the terms:
2 + 0.2(-1 + a) = -1
2 + (-1 * 0.2 + a * 0.2) = -1
2 + (-0.2 + 0.2a) = -1

Combine like terms: 2 + -0.2 = 1.8
1.8 + 0.2a = -1

Solving
1.8 + 0.2a = -1

Solving for variable 'a'.

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

Add '-1.8' to each side of the equation.
1.8 + -1.8 + 0.2a = -1 + -1.8

Combine like terms: 1.8 + -1.8 = 0.0
0.0 + 0.2a = -1 + -1.8
0.2a = -1 + -1.8

Combine like terms: -1 + -1.8 = -2.8
0.2a = -2.8

Divide each side by '0.2'.
a = -14

Simplifying
a = -14

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