8r + 17 = 65 8r = 48 r = 6
r + 11 + 8r = 29
6r
Solving for r: 16r2+18r+5=0 (2r+1)(8r+5)=0 2r+1=0 and 8r+5=0 2r=-1 .......... 8r=-5 r= -1/2 ........ r= -5/8
-6r - s
12 + 8r - 6 = 7r - 5 - 3 8r +6 = 7r -8 r = -14
4(8r - 3)
8r + 17 = 65 8r = 65 - 17 8r = 48 r = 48 / 8 r = 6
8r + 17 = 65 8r = 48 r = 6
Tough to answer this because you haven't indicated what to do with the 81. 64r2 - 144 factors to 16(2r + 3)(2r - 3) 64r2 - 81 factors to (8r + 9)(8r - 9)
-5r + 8r + 5 = 3r +5
assume that you mean 8r + 112 = 8(r+14)
r + 11 + 8r = 29
-9r
6r
If r = 3.25, 8r + 6 = 8(3.25) + 6 = 32.
r=-32