11-0.4(r-5)=0.8(9r-5)

Simple and best practice solution for 11-0.4(r-5)=0.8(9r-5) 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 11-0.4(r-5)=0.8(9r-5) equation:


Simplifying
11 + -0.4(r + -5) = 0.8(9r + -5)

Reorder the terms:
11 + -0.4(-5 + r) = 0.8(9r + -5)
11 + (-5 * -0.4 + r * -0.4) = 0.8(9r + -5)
11 + (2 + -0.4r) = 0.8(9r + -5)

Combine like terms: 11 + 2 = 13
13 + -0.4r = 0.8(9r + -5)

Reorder the terms:
13 + -0.4r = 0.8(-5 + 9r)
13 + -0.4r = (-5 * 0.8 + 9r * 0.8)
13 + -0.4r = (-4 + 7.2r)

Solving
13 + -0.4r = -4 + 7.2r

Solving for variable 'r'.

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

Add '-7.2r' to each side of the equation.
13 + -0.4r + -7.2r = -4 + 7.2r + -7.2r

Combine like terms: -0.4r + -7.2r = -7.6r
13 + -7.6r = -4 + 7.2r + -7.2r

Combine like terms: 7.2r + -7.2r = 0.0
13 + -7.6r = -4 + 0.0
13 + -7.6r = -4

Add '-13' to each side of the equation.
13 + -13 + -7.6r = -4 + -13

Combine like terms: 13 + -13 = 0
0 + -7.6r = -4 + -13
-7.6r = -4 + -13

Combine like terms: -4 + -13 = -17
-7.6r = -17

Divide each side by '-7.6'.
r = 2.236842105

Simplifying
r = 2.236842105

See similar equations:

| -3(2x-4)=-6x+8 | | 73/10-43/5 | | 45x^2+45x+10=0 | | 5x+6+3x=4(2x+3) | | 5=7.5-x*0.5 | | 3x-8=3x+8 | | 4(x+5)=4x+5 | | 2x+12=72 | | 5x=7+x | | 6/5+1/2t=8 | | 0.12(6)+0.02x=0.06(24+x) | | 2x-3=5(x-3) | | 313/3/31/3 | | 2(x-6)=3(x+8) | | 4x+9x-10x=17x-23x+2x | | 0.2(m-12)=0.4m | | 9p=9+10p | | 5=2x-1 | | 7-8v=-9-10v | | x^3-25x^2+47x-30=0 | | -9f+4=-9+7-f | | 1/6(18y+18)-7=-1/5(5y-20) | | -9k+4=-9f+7-f | | 8y(y-7)+52y= | | 4(x-3)=4(x+3) | | 5(2n-4)=-3(4n-8) | | 6k-8=7k | | -5b+2=-4b-8 | | 4(6x^2+13x+5)=0 | | 3x-4+x=56 | | -7t+10=-8t | | 1/9(h+6)=10/9-h |

Equations solver categories