If it's not what You are looking for type in the equation solver your own equation and let us solve it.
0.87+0.15r=-0.03
We move all terms to the left:
0.87+0.15r-(-0.03)=0
We add all the numbers together, and all the variables
0.15r+0.9=0
We move all terms containing r to the left, all other terms to the right
0.15r=-0.9
r=-0.9/0.15
r=-6+1.1102230246252E-16/0.15
| 2x-5=x10 | | 1+6p+7=14 | | 8x+28=) | | (5-x)=(5-x) | | 5-2x14^3,2x=4 | | 2x=315 | | -6t^2+10t=0 | | 10=(4x) | | 8+8a=32 | | (10-4x)=(10-4x) | | -3(4x-5)=-4(6x+1)+43 | | 8x+2-3x=23 | | 8=8a=32 | | 16x+x=9400 | | -5(4x-5)=-23-8x | | -11b=1.05 | | 9x+18-18=36 | | 2+15x=16x-5 | | 50=3w+11 | | -5(x-3)=-23-8x | | f26=29 | | 2x+36=8x+78 | | -44b=4.20 | | 2(5)^x=5000000 | | 9n+4-2n=n | | 8m-5=6m-16 | | -11-4x+3+7x=13 | | 9.6*10^1.3x=345 | | 2*10^.4x=1942 | | 3x+5=-2-5 | | 18=-2x+9 | | 16.2*10^4x=1942 |