If it's not what You are looking for type in the equation solver your own equation and let us solve it.
7(8+r)=84
We move all terms to the left:
7(8+r)-(84)=0
We add all the numbers together, and all the variables
7(r+8)-84=0
We multiply parentheses
7r+56-84=0
We add all the numbers together, and all the variables
7r-28=0
We move all terms containing r to the left, all other terms to the right
7r=28
r=28/7
r=4
| 9x-9=9(x-8) | | 0.5=3x+20 | | x-2/10=4/9 | | -10-2b+6b÷2=b | | 20+8k=52 | | 6=7c+8 | | 7k-21=70 | | 7(x-2)+3=4x+3(-5+x) | | -5=10c–1 | | (2p+1)(3p+4)=225 | | .15(2p+1.50)+1.50=11.50 | | k/3+-7=8 | | 72=3x+24 | | x^2-4x+9x-4=100 | | 2x/15-1/6=x/5 | | 2xx2x=0 | | -6-4(3n+4)=14 | | 7-y=167 | | 20=-4.9x^2+27x+2.4 | | 16x+20=21x+8x | | x+19=103 | | 2p+1=3p+4 | | 3(2-z)/2=z | | 28+n=15n | | 8x+3/8=9x+7/8 | | -3(2x-1)=0 | | 2y-4=22y= | | 3/7+1/2x=-9 | | 37+12x=-9 | | -3(2x1)=0 | | 2x–4=8 | | (4/y+5)-(6/y-5)=(4/y^2-25) |