Answer:
-8
Step-by-step explanation:
four times two equals eight, positive times negative equals negative, so -8
Answer: LAST OPTION.
Step-by-step explanation:
In order to solve for the variable "x" from the expression
, you need to follow these steps:
1) You need to multiply both sides of the equation by 3:

2) You need to multiply both sides of the equation by 6:
3) Finally, you can divide both sides of the equation by 15:

,,,,,,,,,,,,,m............
Answer:
Answer is 24
Step-by-step explanation:

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Answer:
the equation D ) would cause a consistent-independent system.
Step-by-step explanation:
A ) 5 x + y = 7 /*( -2 )
10 x + 2 y = 14
--------------------
- 10 x - 2 y = - 14
10 x + 2 y = 14
------------------------
0 x = 0 ( Dependent system )
B ) 5 x + y = 7 / * 3
- 15 x - 3 y = - 6
--------------------------
15 x + 3 y = 21
- 15 x - 3 y = - 6
-------------------------
0 x = 15 ( Inconsistent system )
C ) 5 x + y = 7
5 x + y = - 7 / * ( - 1 )
---------------------------
5 x + y = 7
- 5 x - y = 7
------------------
0 x = 14 ( Inconsistent system )
D ) 5 x + y = 7 / * ( - 2 )
6 x + 2 y = 7
------------------
- 10 x - 2 y = - 14
6 x + 2 y = 7
-----------------------
- 4 x = - 7; x = 7/4; y = - 7/4