r-9=-20

Simple and best practice solution for r-9=-20 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 r-9=-20 equation: 


Simplifying
r + -9 = -20

Reorder the terms:
-9 + r = -20

Solving
-9 + r = -20

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 + r = -20 + 9

Combine like terms: -9 + 9 = 0
0 + r = -20 + 9
r = -20 + 9

Combine like terms: -20 + 9 = -11
r = -11

Simplifying
r = -11

See similar equations:

| -c=ax+bx | | 53+15x=10x+68 | | 2(x+7)=4x+26 | | -(6x+2y-3)= | | 2x+9=3x+9 | | -75=9n | | -1r+5(1-2r)= | | 4(x-2)-12=3(x-2) | | 6v-7v=-(1-4v)-4(-1+2v) | | 15/.75 | | -10x-40=80 | | 12=-4(3c-6) | | 5/6=35 | | 53x=-43 | | A=pw^3/S | | 7(5-x)=84 | | 6(11+7)= | | 2+5(2x-3)=5(10x+3)-2x | | -5(r+3)=-87 | | 6p+1=3(p+1) | | 1200+45=a | | y=-4x^2-2x+9 | | 2(x+7)=37 | | (2a+b^3)(4a^2+1-b^3)= | | cx-bx=-9 | | D-c/2 | | 8x^2+35x+33=0 | | -11=x-(3x+7) | | 3-4(3x-2)=4(3x+2)-3x | | G-3.6=10 | | -b+4b=8b-20 | | 3(d+12)=8+-4d |

Equations solver categories