-7a^2+2d+9=0

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Solution for -7a^2+2d+9=0 equation:


Simplifying
-7a2 + 2d + 9 = 0

Reorder the terms:
9 + -7a2 + 2d = 0

Solving
9 + -7a2 + 2d = 0

Solving for variable 'a'.

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

Add '-9' to each side of the equation.
9 + -7a2 + -9 + 2d = 0 + -9

Reorder the terms:
9 + -9 + -7a2 + 2d = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -7a2 + 2d = 0 + -9
-7a2 + 2d = 0 + -9

Combine like terms: 0 + -9 = -9
-7a2 + 2d = -9

Add '-2d' to each side of the equation.
-7a2 + 2d + -2d = -9 + -2d

Combine like terms: 2d + -2d = 0
-7a2 + 0 = -9 + -2d
-7a2 = -9 + -2d

Divide each side by '-7'.
a2 = 1.285714286 + 0.2857142857d

Simplifying
a2 = 1.285714286 + 0.2857142857d

Reorder the terms:
-1.285714286 + a2 + -0.2857142857d = 1.285714286 + 0.2857142857d + -1.285714286 + -0.2857142857d

Reorder the terms:
-1.285714286 + a2 + -0.2857142857d = 1.285714286 + -1.285714286 + 0.2857142857d + -0.2857142857d

Combine like terms: 1.285714286 + -1.285714286 = 0.000000000
-1.285714286 + a2 + -0.2857142857d = 0.000000000 + 0.2857142857d + -0.2857142857d
-1.285714286 + a2 + -0.2857142857d = 0.2857142857d + -0.2857142857d

Combine like terms: 0.2857142857d + -0.2857142857d = 0.0000000000
-1.285714286 + a2 + -0.2857142857d = 0.0000000000

The solution to this equation could not be determined.

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