9-r=13

Simple and best practice solution for 9-r=13 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 9-r=13 equation: 


Simplifying
9 + -1r = 13

Solving
9 + -1r = 13

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 + -1r = 13 + -9

Combine like terms: 9 + -9 = 0
0 + -1r = 13 + -9
-1r = 13 + -9

Combine like terms: 13 + -9 = 4
-1r = 4

Divide each side by '-1'.
r = -4

Simplifying
r = -4

See similar equations:

| f(4)=4+-6 | | 5b-12=-2 | | x=x-4+8 | | 3X-4(X+3)=8X+6 | | x/100=1/2 | | 2x=5(x+3) | | .3x+6=12 | | Y=7x^2+5x+1 | | x^2+1=380 | | x*x+1=380 | | -9(c+7)= | | 2a+b=cx | | 6b+9=4b+29 | | -0.008x^2+1.2x-45=-245 | | 7v=2v-2 | | 4x+4/2=x+16/3 | | X-24=130 | | 2w^6y^3+4u^7w^7y^3= | | -12m+4m=11-75 | | -7(7+x)=-50 | | 2h-1/10=5/8 | | 3x^3+4x^2-32x-12=0 | | x+1=135 | | x^2+23x+43=0 | | -5n-8(1+7n)=-6x-23 | | 3ab-2b^2+5a^2=0 | | 1+2=45678 | | 2(x+1)=3x+3 | | 54=7+7y | | 22x^2-40x-8= | | 2x+4/3=2(x-1) | | 4x-7(3-3)-9= |

Equations solver categories