If it's not what You are looking for type in the equation solver your own equation and let us solve it.
8r-7r=13
We simplify the equation to the form, which is simple to understand
8r-7r=13
We move all terms containing r to the left and all other terms to the right.
+8r-7r=+13
We simplify left and right side of the equation.
+1r=+13
We divide both sides of the equation by 1 to get r.
r=13
| 85+69+6x+22+x+37=180 | | -51=-6x+5(2x-3) | | 9u+10u-15u=-12 | | (9a+9)-(7a-3)= | | x=-2-2+99 | | 4(1+c)-(3+c)=15 | | y=-8e^2x | | 4x+4=4x+16 | | -14c+10c+c+2c=9 | | 17z-16z+z-2z+2z=20 | | 3x+12=6x+24 | | 4(1+3)-(3+c)=15 | | 9x^2-6=-2 | | 8q+q-7q=16 | | 119+90+90+2x+3=180 | | x+3/4=2x-3/5 | | -2r+r=11 | | 5x+50=2x+100 | | 54-37a=5 | | 98-5x=-106+7x | | 40=c | | 21=-3(x+4) | | 4[x-(3-2x)+5]=3(x+11) | | 7x-5(4x)=0 | | 10s^2-33sb+20b^2= | | -5x^2+12.5x=0 | | y-7=-3(x+2) | | F(6)=2x | | 2*(1+c)-(2+c)=10 | | 9-7x+12+2x= | | 27x^2+36xz+12= | | 3e^1=18 |