3r+12=4r-3

Simple and best practice solution for 3r+12=4r-3 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 3r+12=4r-3 equation:


Simplifying
3r + 12 = 4r + -3

Reorder the terms:
12 + 3r = 4r + -3

Reorder the terms:
12 + 3r = -3 + 4r

Solving
12 + 3r = -3 + 4r

Solving for variable 'r'.

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

Add '-4r' to each side of the equation.
12 + 3r + -4r = -3 + 4r + -4r

Combine like terms: 3r + -4r = -1r
12 + -1r = -3 + 4r + -4r

Combine like terms: 4r + -4r = 0
12 + -1r = -3 + 0
12 + -1r = -3

Add '-12' to each side of the equation.
12 + -12 + -1r = -3 + -12

Combine like terms: 12 + -12 = 0
0 + -1r = -3 + -12
-1r = -3 + -12

Combine like terms: -3 + -12 = -15
-1r = -15

Divide each side by '-1'.
r = 15

Simplifying
r = 15

See similar equations:

| 5y+8=27y | | X/4-86 | | 6x^3+42-12x-21x^2=0 | | x-7+3x=58 | | 7a+21=42 | | x-5+4x=100 | | 28-w=155 | | -6b-6+7= | | 8(5+4m)+11=-5(3-7n) | | 3x^2+3+72=0 | | F(x)=20(0.5) | | 6x-3=83 | | 3k-1=4k+4 | | 4y+2=58 | | -4m-13=7 | | 3x-2=83 | | 4+x=2(4x-5) | | x+.3x=375000 | | 6+(x+4)=5-(4x+7) | | r-1/6=52/3 | | 3x-115=3.25x-(130+1.25x) | | 2x^2-2x+2=-1x^2-7x | | 6/2=36/ | | 0.625x=-0.45 | | -2(3+3x)=-60 | | Sin30=2.3/x | | 4/9v=16 | | (4x+2)+3x=88 | | Tan18=x/3 | | ln(3x-5)=3.2 | | 4x+2x=420 | | 7x-1=8+4x |

Equations solver categories