3 - 1/8a = 1/4
The goal is to isolate "a" and its coefficient to make the simplification process easier.
Start by subtracting 3 from both sides:
3 - 3 - 1/8a = 1/4 -3
-1/8a = 1/4 - 3
Next, multiply 3 by 4/4 to convert it into a fraction:
-1/8a = 1/4 - [3 • (4/4)]
-1/8a = 1/4 - 12/4
-1/8a = - 11/4
Multiply both sides by -8:
(-8) -1/8a = - 11/4 (-8)
a = 88/4 = 22
Therefore, a = 22.
16 ounce bag of rice for $0.04 per unit
5 + 5 + 5 + 5 + 5 + 5 = 30 (6 bills)
1 + 1 + 1 + 1 + 1 = 5 (5 bills)
30 + 5 = 35 (11 bills)
120 divided by 10 to get 10% equals 12. 12 multiplied by 3 equals 36 so 30% equals 36
