49=r^2

Solution for 49=r^2 equation:

Simplifying
49 = r2

Solving
49 = r2

Solving for variable 'r'.

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

Add '-1r2' to each side of the equation.
49 + -1r2 = r2 + -1r2

Combine like terms: r2 + -1r2 = 0
49 + -1r2 = 0

Add '-49' to each side of the equation.
49 + -49 + -1r2 = 0 + -49

Combine like terms: 49 + -49 = 0
0 + -1r2 = 0 + -49
-1r2 = 0 + -49

Combine like terms: 0 + -49 = -49
-1r2 = -49

Divide each side by '-1'.
r2 = 49

Simplifying
r2 = 49

Take the square root of each side:
r = {-7, 7}