Answer:
Step-by-step explanation:
x+4=2x-3
x-3=4
x=7
Answer:
4 x 2 x 10 = 80
Step-by-step explanation:
80 Crackers total divided evenly among the two boxes gives you 40 crackers per box. Next there are 4 packages and 40 crackers in the packages total. So divide 40 by 4. This gives you 10. 10 crackers per package.
Answer:
119°
Step-by-step explanation:
< DBE = 180° - < ABE
or, < DBE = 180° - 61°
or, < DBE = 119°
hope it works, fanks !!
Answer: 
Step-by-step explanation:
1. By definition, if 
when 
, then:
2. Keeping this on mind, to find the value of 
when 
, you must apply the following proccedure:
3. Now, you must solve for , as following:
4. Then, the result is:
Answer: 22 /5
-3+7y=5x+2y
Step-by-step explanation:
Subtract 2y from each side
-3+7y-2y=5x+2y-2y
-3 +5y = 5x
Add 5 to each side
5y = 5x+3
Divide each side by 5
y = 5x/5 +3/5
y = x +3/5
Let x = -5
y = -5 + 3/5
y = -25/5 +3/5
y = -22/5
Step-by-step explanation:
