-30=-3(-4+12r)-6(r-7)

Simple and best practice solution for -30=-3(-4+12r)-6(r-7) 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 -30=-3(-4+12r)-6(r-7) equation:


Simplifying
-30 = -3(-4 + 12r) + -6(r + -7)
-30 = (-4 * -3 + 12r * -3) + -6(r + -7)
-30 = (12 + -36r) + -6(r + -7)

Reorder the terms:
-30 = 12 + -36r + -6(-7 + r)
-30 = 12 + -36r + (-7 * -6 + r * -6)
-30 = 12 + -36r + (42 + -6r)

Reorder the terms:
-30 = 12 + 42 + -36r + -6r

Combine like terms: 12 + 42 = 54
-30 = 54 + -36r + -6r

Combine like terms: -36r + -6r = -42r
-30 = 54 + -42r

Solving
-30 = 54 + -42r

Solving for variable 'r'.

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

Add '42r' to each side of the equation.
-30 + 42r = 54 + -42r + 42r

Combine like terms: -42r + 42r = 0
-30 + 42r = 54 + 0
-30 + 42r = 54

Add '30' to each side of the equation.
-30 + 30 + 42r = 54 + 30

Combine like terms: -30 + 30 = 0
0 + 42r = 54 + 30
42r = 54 + 30

Combine like terms: 54 + 30 = 84
42r = 84

Divide each side by '42'.
r = 2

Simplifying
r = 2

See similar equations:

| 15-.1666n=.1666n-1 | | 12x+16y=-48 | | 9x-5y=-7 | | 5t+t^2-24=0 | | 5t-t^2-24=0 | | 7x+10=2x+4 | | 12x-9+3x-4=11x-3+3x | | 687*333= | | -15/-3 | | 22+2x=37+6 | | 4x+10=R | | d=6.2 | | 4(y-4)/3=-3y | | 14x+35-10x=4x | | -8-5y=9y | | (8*1/6)*7=8*(1/6*7) | | 2w-5-3w=40 | | 3a+12=3(a+4) | | -2+3=-3x-1 | | 15+3m= | | 11/30=-a/9 | | t-18=43 | | 6a^2+24=0 | | -13-5n=n+5 | | 15+5m= | | -(-7)--2= | | x^2+3x+4=10 | | 1/2(x+1)=1/3(x-1) | | 15+-6.5t=43.8+9.7t | | -x-1/7=x+1/2+2/7 | | 8b-6=5b+3 | | 4x^9=12x |

Equations solver categories