The answer is 1.
Im too lazy to show the work, but heres how I checked
-7(1 + 2) = -14 - 7
-7 + (-14) = -14 - 7
-21 = -21
1/3x+y=10/8
Times 1/2 for both side
1/6x+1/2y=5/8
-
1/6x+1/5y=13/6
=
3/10y=-1/2
Divided 3/10 for both side
y=-5/3
1/3x+y=10/8
1/3x-5/3=10/8
1/3x=70/24
1/3x=35/12
x=35/4
x=8 3/4. As a result, the solution set is (8 3/4,-5/3). Hope it help!
Answer:
The answer is 14.78 by adding the 2 items and then subtracting that from the 20
