If it's not what You are looking for type in the equation solver your own equation and let us solve it.
+40=2R
We move all terms to the left:
+40-(2R)=0
We move all terms containing R to the left, all other terms to the right
-2R=-40
R=-40/-2
R=+20
| 964=k+120 | | 53=28/x | | -10n-20=-10(10-7n) | | 2/3t=1/6 | | -2(n-120+1=-2n+25 | | 455=7(-6x+17) | | X(4x+5)=90 | | 5x+17=3x-23 | | 95=249-k | | -5(3x-1)=2(x-29)-39 | | A=25-p | | -196=7(5x/17) | | 5-7.75m=42.25 | | 4x+24=-(x-9) | | -196=7(5x+17) | | 7(5+3x)=98 | | 9+5c=104 | | 3.9p=17.55 | | 12a-4=-7a=243 | | (X+8)(3x)=180 | | 47+12=8y | | -132=6h | | (Y-1.2)=-1.2(x-0.5) | | 870=29s | | 30(5^x+3)=150 | | 2x-7(3x+25)=-4 | | h/3-15=-11 | | 2x-2/3=3x+7/3 | | 305=n-98 | | 19.95+.21m=24.95+.16m | | 30x5^x+3=150 | | 28-7m=-8m+6(12+2m) |