If you write a number over another number, it's called a FRACTION
90 + x + 107 + 144 + 138 = 540
479 + x = 540
x = 540 - 479
x = 61
<em>To solve for a variable, you have to isolate that variable onto one side.</em>
<h3>1.</h3>
Firstly, multiply both sides by 2: 
Next, divide both sides by a + b and <u>your answer will be:
</u>
<h3>2.</h3>
For this, divide both sides by πr², and <u>your answer will be
</u>
<h3>3.</h3>
Firstly, subtract both sides by 2πr²: 
Lastly, divide both sides by 2πr, and <u>your answer will be:
</u>
Answer:
2
Step-by-step explanation:
3(2x + 4)=?
6x + 12
6x/6=x
12/6=2
x=2
The outcomes are equally likely. in the first image, 1 2 3 and 4 all have a 25% chance of happening- while in the second image, both 1 and 2 have a 50% chance of happening