Answer:
4/3
Step-by-step explanation:
Step 1: Cross-multiply.
135=a20
(13)*(20)=a*(5)
203=5a
Step 2: Flip the equation.
5a=203
Step 3: Divide both sides by 5.
5a5=2035
a=4/3
hope I'm right
Answer: -2b-4
Ok, so I assume you meant b-4-3b. If not, then B-4-3b is the best you can get, since B and b are different in math.
Anyways, we can rearrange b-4-3b into b-3b-4. Calculating b-3b = -2b. That means -2b-4 is the answer.
Hope that helped,
-sirswagger21
One half life 1000 mg to 1000/2 =500 mg
One half life 500 mg to 500/2 = 250 mg
One half life 250 mg to 250/2 = 125 mg
Etc .......