(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
60.
3
12
220 divided by 12 equals 18 with a remainder of 4.
It's hard to tell what formula you mean from your description, but I think you mean 4 times 3 divided by 4 plus 10 times 5 over 12. Normally multiplication and division is performed before addition so this equals (4 * 3 / 4) + (10 * 5 / 12) 4 times 3 divided by 4 equals 12 divided by 4 equals 3 and on the other side of the plus 10 times 5 divided by 12 equals 50 divided by 12 50 doesn't go exactly into 12 but we can make it equal 25 over 6 to add the results we need to evaluate 3 plus (25 over 6) to do this, we have to use a lowest common denominator, in this case 6 3 plus (25 over 6) equals 3 * 6 over 6 plus (25 over 6) equals (18 over 6) plus (25 over 6) equals (18 + 25) over 6 43 over 6 43 over 6 is a vulgar fraction, so we extract as many whole numbers as possible 43 over 6 equals 42 over 6 plus 1 over 6 equals: 7 plus 1 over 6 7 1/6
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
No. -18 / 3 = -6
12 + 16 + 18 + 20 + 9 = 75
No.
60.
There are infinitely many possible answers. 1.5 + 2.5 + 18 = 10 + 0 + 12
3
18
300 divided by 18 equals 16 with a remainder of 12 or 16.67