49=100u^2

Solution for 49=100u^2 equation:

Simplifying
49 = 100u2

Solving
49 = 100u2

Solving for variable 'u'.

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

Add '-100u2' to each side of the equation.
49 + -100u2 = 100u2 + -100u2

Combine like terms: 100u2 + -100u2 = 0
49 + -100u2 = 0

Add '-49' to each side of the equation.
49 + -49 + -100u2 = 0 + -49

Combine like terms: 49 + -49 = 0
0 + -100u2 = 0 + -49
-100u2 = 0 + -49

Combine like terms: 0 + -49 = -49
-100u2 = -49

Divide each side by '-100'.
u2 = 0.49

Simplifying
u2 = 0.49

Take the square root of each side:
u = {-0.7, 0.7}