A. 6 51
B. 6 42
C. 34 minutes
Answer:
x=-5/8, y=15/2, z=-10. (-5/8, 15/2, -10).
Step-by-step explanation:
4x-7y=5
8x+3z=-35
6y+3z=15
----------------
4x=7y+5
2(4x)=2(7y+5)
8x=14y+10
14y+10+3z=-35
14y+3z=-35-10
14y+3z=-45
-----------------------
14y+3z=-45
6y+3z=15
------------------
14y+3z=-45
-(6y+3z)=-15
---------------------
14y+3z=-45
-6y-3z=-15
--------------------
8y=-60
simplify,
y=15/2
6(15/2)+3z=15
45+3z=15
3z=15-45
3z=-30
z=-30/3
z=-10
8x+3(-10)=-35
8x-30=-35
8x=-35+30
8x=-5
x=-5/8
x=-5/8, y=15/2, z=-10.
Answer:
The Greatest Common Factor (GCF) is: 3 x 3 x 3 x 3 x 11 = 891
Answer:
3(x+7)-10=26
Step-by-step explanation:
Answer:
-3 b + 16
Step-by-step explanation:
Simplify the following:
-3 (b - 3) + 7
-3 (b - 3) = 9 - 3 b:
9 - 3 b + 7
Grouping like terms, 9 - 3 b + 7 = -3 b + (9 + 7):
-3 b + (9 + 7)
9 + 7 = 16:
Answer: -3 b + 16