9r^2+7=16

Simple and best practice solution for 9r^2+7=16 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 9r^2+7=16 equation: 


Simplifying
9r2 + 7 = 16

Reorder the terms:
7 + 9r2 = 16

Solving
7 + 9r2 = 16

Solving for variable 'r'.

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

Add '-7' to each side of the equation.
7 + -7 + 9r2 = 16 + -7

Combine like terms: 7 + -7 = 0
0 + 9r2 = 16 + -7
9r2 = 16 + -7

Combine like terms: 16 + -7 = 9
9r2 = 9

Divide each side by '9'.
r2 = 1

Simplifying
r2 = 1

Take the square root of each side:
r = {-1, 1}

See similar equations:

| 3t+10=18 | | 36c+20=6c-9 | | 5X-13=15+7 | | f(-4)=12+5 | | 16p^2-6=10 | | 5X-13=17+7 | | 2+3=6x | | 3.6w=1.5w+24 | | 3x=244 | | 22/x=88 | | -29x+23y=-19 | | 100a^2-6=58 | | f(-4)=3x*5 | | 3(-3)-2y=7 | | 7.4z-5(-1.6z+2.4)= | | 5x=5y+4z | | x^2+4.5x=0 | | 2(-m-4n)= | | 81x^2-10=6 | | 6x+3x=(3x-2)-24 | | 4(n-4)+2=3(n+1) | | 6((x+3)(x+3))+20=12 | | S=-5t^2+20+60 | | 9x+5-4x=2(x+7) | | 6(x+3)2+20=12 | | X+20-22=16 | | 4(n-4)+2=3(p+1) | | cosx=(-sin^2)x-1 | | f=8g+4n | | 3/4x=118 | | 6x+77+2x+157=180 | | 2a+6=-2 |

Equations solver categories