r+9=30

Simple and best practice solution for r+9=30 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=30 equation: 


Simplifying
r + 9 = 30

Reorder the terms:
9 + r = 30

Solving
9 + r = 30

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 = 30 + -9

Combine like terms: 9 + -9 = 0
0 + r = 30 + -9
r = 30 + -9

Combine like terms: 30 + -9 = 21
r = 21

Simplifying
r = 21

See similar equations:

| 8s+2s-6=34 | | t+4=28 | | 9x^2+x-9=0 | | 7-4x=3x^2-6x+3 | | -8x+10+9x=4+6 | | z+9=25 | | w+6=20 | | 5-8x=3x^2-12x+3 | | 35x^2y+18x^2y^2+-27x^2y+-34x^2y^2+14x^2y= | | 7r+1-18=-9 | | q+9=15 | | h+8=12 | | y=-InX | | 4(7c-1)-8=26c+4 | | p+4=35 | | 2b+20=52 | | 3(6s+5)-6s=3(4s+3)-14 | | v+11=22 | | 7x+9=5x+6 | | -2+10=16x-5-15x | | 7s-8=-29 | | t+11=23 | | p+3=17 | | X^2(Ln(x))=4(Ln(x)) | | -3*(-1)+2*2+0*1=7 | | -5w-24=-7(w+4) | | 5(x+6)=9x+6 | | 2y^2-5y-1=0 | | 5*1+1*3+0*5+(-2)*7+(-3)*9=27 | | 4v-16=6(v-5) | | -12=7-3y | | 8-7s=-29 |

Equations solver categories