2r-9=1+7r

Simple and best practice solution for 2r-9=1+7r 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 2r-9=1+7r equation:


Simplifying
2r + -9 = 1 + 7r

Reorder the terms:
-9 + 2r = 1 + 7r

Solving
-9 + 2r = 1 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-9 + 2r + -7r = 1 + 7r + -7r

Combine like terms: 2r + -7r = -5r
-9 + -5r = 1 + 7r + -7r

Combine like terms: 7r + -7r = 0
-9 + -5r = 1 + 0
-9 + -5r = 1

Add '9' to each side of the equation.
-9 + 9 + -5r = 1 + 9

Combine like terms: -9 + 9 = 0
0 + -5r = 1 + 9
-5r = 1 + 9

Combine like terms: 1 + 9 = 10
-5r = 10

Divide each side by '-5'.
r = -2

Simplifying
r = -2

See similar equations:

| 48-4(g-17)=142-18(g-10) | | 5ax+bx-15a-3b= | | 7i/-8-4i | | 10x=15/21-35/21 | | 10xy-4(xy+xy)=0 | | -6x^2+y^2+4xy+3=0 | | x*sqrt(16-x^2)=0 | | 9.7x+18=4.7x+13 | | x-5/3-x0 | | 5+7ln(x)=13 | | 9x-5+3=-21 | | 2(8-k)=22 | | 9(2x+4)-7x=5x-18 | | 6r-38=-5(-2r+2) | | 256x-x^5=0 | | 6.75*x^2-170*x+800=0 | | 3x/7-x=2x-10 | | 2*ln*3x=4 | | 4/7x-6=2 | | (5x)/(b)-(9x)/(c)=a | | 3(1.5n-6.3)+0.5=4(n+1.1) | | 9y-y^2= | | X+11+8x=20 | | A+B+C=180(forB) | | y=3x^8-4x^7+11x^6-4x^5+15 | | 6(2y-5)=10-4(y-10) | | 8/25= | | 20g^2+23g=0 | | 18x^2-36x=0 | | 7900=600x+0 | | 3=1-x | | 5-3/7a=26 |

Equations solver categories