If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-1-r=3
We move all terms to the left:
-1-r-(3)=0
We add all the numbers together, and all the variables
-1r-4=0
We move all terms containing r to the left, all other terms to the right
-r=4
r=4/-1
r=-4
| -8+k/2=-11 | | 4(x-3)+2=3/2(x+2)+10 | | x/4(-5)=-4 | | 36=w/8+30 | | 7(6x+4)=-15-x | | 236=3πr2 | | 14+8d=-26 | | 7+8j=87 | | -(3n+6)=-8-2n | | 4(g-91)=36 | | (4/x)+(4/2x+3)=9 | | 0.03=2.8^x | | 145=5x^2 | | 3v-5+5=-2+4v | | (27)^2x+1=1/3 | | 3(m-80)=51 | | -8b-6=b+2-5b | | 2b+12=6+3b | | -x=5/10 | | 4z2+4z-3=0 | | (x+1)^2=((x-1)+5)(x-1) | | 89=9+5v | | 6(k-87)=36 | | 5k+8=2+8k | | 10=c+17/4 | | -1+5(8-8n)=239 | | 15=3t=17-t | | 2x+14=10+3x-x | | X+(4x-10)=180 | | 4(-5p+5)+3=-97 | | 7d=161 | | 3x15=5 |