-7u^2+6=0

Solution for -7u^2+6=0 equation:

Simplifying
-7u2 + 6 = 0

Reorder the terms:
6 + -7u2 = 0

Solving
6 + -7u2 = 0

Solving for variable 'u'.

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

Add '-6' to each side of the equation.
6 + -6 + -7u2 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -7u2 = 0 + -6
-7u2 = 0 + -6

Combine like terms: 0 + -6 = -6
-7u2 = -6

Divide each side by '-7'.
u2 = 0.8571428571

Simplifying
u2 = 0.8571428571

Take the square root of each side:
u = {-0.9258201, 0.9258201}