= 2a - 1
2() = 2(2a - 1) <em>multiplied both sides by 2 </em>
ab = 4a - 2 <em>distributed the 2 on the right side</em>
ab - 4a = -2 <em>subtracted 4a from both sides</em>
a(b - 4) = -2 factored out "a" from the left side
a = 
<em>divided (b - 4) on both sides</em>
Answer: a =
Answer:2.2
Step-by-step explanation:100.8-98.6=2.2
A 31 inches is the answer because it can't be higher than 39
X + 12 = 13
x = 13 - 12
x = 1
The only solution is x = 1
letter B
