100r^2+9=10

Solution for 100r^2+9=10 equation:

Simplifying
100r2 + 9 = 10

Reorder the terms:
9 + 100r2 = 10

Solving
9 + 100r2 = 10

Solving for variable 'r'.

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

Add '-9' to each side of the equation.
9 + -9 + 100r2 = 10 + -9

Combine like terms: 9 + -9 = 0
0 + 100r2 = 10 + -9
100r2 = 10 + -9

Combine like terms: 10 + -9 = 1
100r2 = 1

Divide each side by '100'.
r2 = 0.01

Simplifying
r2 = 0.01

Take the square root of each side:
r = {-0.1, 0.1}