If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-2-4r=38
We move all terms to the left:
-2-4r-(38)=0
We add all the numbers together, and all the variables
-4r-40=0
We move all terms containing r to the left, all other terms to the right
-4r=40
r=40/-4
r=-10
| 6=3x/7 | | 140/x=7 | | 3/7=2.4/x | | 5=350/x | | 4x2−8x+1=0 | | -5a-2=33 | | -3/8v=-12 | | 5(x+6=) | | -2+2x=-22 | | -4x-12=4(x-3) | | 4b+5=1+5b | | 4x-24=20-x | | v^2-9=-5 | | -7(7x-9)=-525 | | 4+4a=36 | | x+3.45=7.65 | | x·x/2/2=81 | | 2A+3B=5.B=a-5 | | 7(2x-7)=91 | | 12.7=c9.3 | | 2x·x/2=81 | | 3k^2+33k+90=0 | | 4(5-5x)=-180 | | -3(7+4x)=-21 | | 75+10=x | | 11x-3=6x=5x=7x | | 5(-7+7x)=70 | | x-6.8=-7.8 | | 75+40=x+30 | | 6+0.15x=5+0.35x | | x^2·2=81 | | 2.1=d |