Final Answer: 
Steps/Reasons/Explanation:
It is common addition and subtraction because they all have w after the number. This means they are the same variable. A plus minus (+-) would be a minus (-).
Question: Simplify the expression: 
.
<u>Step 1</u>: Simplify.
<u>Step 2</u>: Simplify.
~I hope I helped you :)~
The sum of angles in a triangle add up to 180°, therefore to find the value of x we proceed as follows;
sum of angles in ΔABC will be:
48+(6x-28)+2x=180
putting like terms together we get
48-28+6x+2x=180
20+8x=180
8x=180-20
8x=160
x=160/8
x=20°
hence:
∠B=(6x-28)=6×20-28=92°
∠C=2x=2×20=40°
Use a calculator.
(23/13.8)-18=-16.333=(-16)-(1/3)
Ok. So she wants to advertise that there are 100 different dolls available. If she adds another category, then at most she already had 99 different types. If I'm right (don't take my word for it) but the minimum she would have to have is one. <span />
