(3r + 18)/12 = (4r - 48)/4
Multiply both sides by 12: (3r + 18) = 3*(4r - 48)
or: 3r + 18 = 12r - 144
Subtract 3r from both sides: 18 = 9r - 144
Add 144 to both sides: 162 = 9r
Divide both sides by 9: 18 = r
Answer: r = 18
If you mean -x +x/3 = 12 then the value of x is -18 Check: --18 +(-18/3) = 12
The Answer is Commutative Property
-6
18
12 + 16 + 18 + 20 + 9 = 75
No. -18 / 3 = -6
60.
No.
There are infinitely many possible answers. 1.5 + 2.5 + 18 = 10 + 0 + 12
3
300 divided by 18 equals 16 with a remainder of 12 or 16.67
7-18 plus 4(3-12) divided by 9