12r+7(3r-5s)-9(6r+3s)=

Simple and best practice solution for 12r+7(3r-5s)-9(6r+3s)= 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 12r+7(3r-5s)-9(6r+3s)= equation:


Simplifying
12r + 7(3r + -5s) + -9(6r + 3s) = 0
12r + (3r * 7 + -5s * 7) + -9(6r + 3s) = 0
12r + (21r + -35s) + -9(6r + 3s) = 0
12r + 21r + -35s + (6r * -9 + 3s * -9) = 0
12r + 21r + -35s + (-54r + -27s) = 0

Reorder the terms:
12r + 21r + -54r + -35s + -27s = 0

Combine like terms: 12r + 21r = 33r
33r + -54r + -35s + -27s = 0

Combine like terms: 33r + -54r = -21r
-21r + -35s + -27s = 0

Combine like terms: -35s + -27s = -62s
-21r + -62s = 0

Solving
-21r + -62s = 0

Solving for variable 'r'.

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

Add '62s' to each side of the equation.
-21r + -62s + 62s = 0 + 62s

Combine like terms: -62s + 62s = 0
-21r + 0 = 0 + 62s
-21r = 0 + 62s
Remove the zero:
-21r = 62s

Divide each side by '-21'.
r = -2.952380952s

Simplifying
r = -2.952380952s

See similar equations:

| .7n-4=.9 | | 7x=10+9x | | 4y^2+20y+21=0 | | (8-5i)-(-11+4i)=0 | | 9x-3+3x=8x-9 | | -7=7b+1+6 | | 4y^2+10y+21=0 | | -5.2m-7.7-1m=-7.9-6.2-0.2 | | -x-8=96 | | 2g+32=126 | | 2g=126-32 | | 9-9x=-2x | | 2v-3v=6 | | 4.5020%= | | 28=p*136 | | 0.5x-4.33=-1.7 | | 9(32-x)=6x | | 6x-2=2x+2+4x-4 | | -4x^2-16x-15=0 | | 3c+4c=9 | | 10x+3(2x+5)=19 | | 4f+3-f=-7+2f | | 2a^2-7a-9=0 | | 160=16x+40y | | 10-3(2m-9)=(m-1)+1 | | (-1+i)-(7-5i)=0 | | 1.5x=x+4.2 | | 5y+15x=20 | | 2(-5x+21)+10=172 | | -16=1-4x-5 | | y^2-4xy+4x^2= | | -73-15=x |

Equations solver categories