Ans. 1 Angle E and angle F are corresponding angles.
Solution 2. 
So, 
angle E = angle F
=> x + 20 = 5x - 20
=> x + 20 + 20 = 5x
=> x + 40 = 5x
=> 40 = 5x - x
=> 40 = 4x
=> 40/4 = x
=> 10 = x
Solution 3.
E = x + 20
=> E = 10 + 20
=> E = 30
F = 5x - 20
=> F = 5(10) - 20
=> F = 50 - 20
=> F = 30
<em>Again</em><em> </em><em>justified</em><em> </em><em>that </em><em>they </em><em>are </em><em>equal</em><em> (</em><em> </em><em>besides</em><em> </em><em>answer </em><em>1</em><em>)</em><em>.</em>
 
        
             
        
        
        
Answer:
10a-11b is ur answer 
Step-by-step explanation:
combine like terms 
8a+2a=10a
-7b-4b=-11b
(always make sure to but in alphabetic order)
10a-11b
hope this helps 
 
        
             
        
        
        
Answer:
<em>m</em> = 3/5
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
- Coordinates (x, y)
- Slope Formula:  
- Perpendicular lines are the negative reciprocal of the given line
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify</em>
Point G(-2, 3)
Point H(1, -2)
<u>Step 2: Find slope </u><em><u>m</u></em>
Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>
<em />
<em>Line GH</em>
- Substitute in points [Slope Formula]:                                                               
- [Fraction] Subtract:                                                                                            
<em>Perpendicular line</em>
- Negative:                                                                                                            
- Reciprocate:                                                                                                       
 
        
             
        
        
        
Answer: -3.5x
Step-by-step explanation:
Distribute 7 to 1 and 2 then