2(r-1)=9+r

Simple and best practice solution for 2(r-1)=9+r 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 2(r-1)=9+r equation:


Simplifying
2(r + -1) = 9 + r

Reorder the terms:
2(-1 + r) = 9 + r
(-1 * 2 + r * 2) = 9 + r
(-2 + 2r) = 9 + r

Solving
-2 + 2r = 9 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-2 + 2r + -1r = 9 + r + -1r

Combine like terms: 2r + -1r = 1r
-2 + 1r = 9 + r + -1r

Combine like terms: r + -1r = 0
-2 + 1r = 9 + 0
-2 + 1r = 9

Add '2' to each side of the equation.
-2 + 2 + 1r = 9 + 2

Combine like terms: -2 + 2 = 0
0 + 1r = 9 + 2
1r = 9 + 2

Combine like terms: 9 + 2 = 11
1r = 11

Divide each side by '1'.
r = 11

Simplifying
r = 11

See similar equations:

| 2y+3(y-1)=27 | | 2y+(y-1)=27 | | -13=k-14 | | 6x+3(x-9)=72 | | 2y+26=26 | | X-4+3=-10 | | 9+x+4=12 | | 4(2b-3)+2b=18 | | (2x+5)=2x | | 3(6x+4)-14x=2(2x+2)-9 | | 6v+36=-8(5v+7) | | 4*3=12+c-8+34c-35c+8 | | 4*3=12+c-8+34c-35c | | 14.2t+-25.2=3.8t+26.8 | | 4*3=12+c-8+34c | | 4*3=12+c-8 | | 3x+5(3x-13)=43 | | 4x+2y=8.5 | | 4*3=12+c | | 2a+2a-22=34 | | 15t-25t^2=0 | | 1.4x-8=-3 | | 12-3x+15=21 | | 5x-30-6x+30=x+5-x+3 | | 20x^2+49x+25=5 | | 1.9=6.4z-3.7z-3.5 | | 3n-27=-1+4(n-8) | | 4(3x-8)=-9x+13 | | (7x)(5)= | | .25(12+4x)-.5(8+2x)=0 | | -8=12-4n | | .25(12+4x)-.5(8+2x)= |

Equations solver categories