7a-16=-2a(-5a+2)+3

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Solution for 7a-16=-2a(-5a+2)+3 equation:


Simplifying
7a + -16 = -2a(-5a + 2) + 3

Reorder the terms:
-16 + 7a = -2a(-5a + 2) + 3

Reorder the terms:
-16 + 7a = -2a(2 + -5a) + 3
-16 + 7a = (2 * -2a + -5a * -2a) + 3
-16 + 7a = (-4a + 10a2) + 3

Reorder the terms:
-16 + 7a = 3 + -4a + 10a2

Solving
-16 + 7a = 3 + -4a + 10a2

Solving for variable 'a'.

Reorder the terms:
-16 + -3 + 7a + 4a + -10a2 = 3 + -4a + 10a2 + -3 + 4a + -10a2

Combine like terms: -16 + -3 = -19
-19 + 7a + 4a + -10a2 = 3 + -4a + 10a2 + -3 + 4a + -10a2

Combine like terms: 7a + 4a = 11a
-19 + 11a + -10a2 = 3 + -4a + 10a2 + -3 + 4a + -10a2

Reorder the terms:
-19 + 11a + -10a2 = 3 + -3 + -4a + 4a + 10a2 + -10a2

Combine like terms: 3 + -3 = 0
-19 + 11a + -10a2 = 0 + -4a + 4a + 10a2 + -10a2
-19 + 11a + -10a2 = -4a + 4a + 10a2 + -10a2

Combine like terms: -4a + 4a = 0
-19 + 11a + -10a2 = 0 + 10a2 + -10a2
-19 + 11a + -10a2 = 10a2 + -10a2

Combine like terms: 10a2 + -10a2 = 0
-19 + 11a + -10a2 = 0

Begin completing the square.  Divide all terms by
-10 the coefficient of the squared term: 

Divide each side by '-10'.
1.9 + -1.1a + a2 = 0

Move the constant term to the right:

Add '-1.9' to each side of the equation.
1.9 + -1.1a + -1.9 + a2 = 0 + -1.9

Reorder the terms:
1.9 + -1.9 + -1.1a + a2 = 0 + -1.9

Combine like terms: 1.9 + -1.9 = 0.0
0.0 + -1.1a + a2 = 0 + -1.9
-1.1a + a2 = 0 + -1.9

Combine like terms: 0 + -1.9 = -1.9
-1.1a + a2 = -1.9

The a term is -1.1a.  Take half its coefficient (-0.55).
Square it (0.3025) and add it to both sides.

Add '0.3025' to each side of the equation.
-1.1a + 0.3025 + a2 = -1.9 + 0.3025

Reorder the terms:
0.3025 + -1.1a + a2 = -1.9 + 0.3025

Combine like terms: -1.9 + 0.3025 = -1.5975
0.3025 + -1.1a + a2 = -1.5975

Factor a perfect square on the left side:
(a + -0.55)(a + -0.55) = -1.5975

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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