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Simplifying
0 = 28 + -7.8x2
Solving
0 = 28 + -7.8x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '7.8x2' to each side of the equation.
0 + 7.8x2 = 28 + -7.8x2 + 7.8x2
Remove the zero:
7.8x2 = 28 + -7.8x2 + 7.8x2
Combine like terms: -7.8x2 + 7.8x2 = 0.0
7.8x2 = 28 + 0.0
7.8x2 = 28
Divide each side by '7.8'.
x2 = 3.58974359
Simplifying
x2 = 3.58974359
Take the square root of each side:
x = {-1.894661867, 1.894661867}
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