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maksim [4K]
3 years ago
5

WILL MARK BRAINIEST! 25 points!!! What is the x-coordinate of the solution to the following system of equations? 2x + y = −4 5x

+ 3y = −6 x = −6 x = 6 x = −8 x = 8 please show work, I really don't understand this.
Mathematics
2 answers:
vladimir2022 [97]3 years ago
6 0

Answer:

x=-6

Step-by-step explanation:

2x+y=-4

5x+3y=-6

solve :

multiply first equation by 3

6x+3y=-12

5x+3y=-6

subtract the two equations : 6x+3y-5x-3y=-12-(-6)

x=-12+6

x=-6

Bezzdna [24]3 years ago
6 0

Answer:

x= -6

Step-by-step explanation:

2x + y = −4 ⇒ y= -2x -4

5x + 3y = −6  

replacing y with -2x-4

  • 5x+3(-2x-4)= -6
  • 5x - 6x - 12= -6
  • -x = 12-6
  • -x= 6
  • x= -6
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-----------

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Please help! please show the work and not give me and answer thank you ❤️
Citrus2011 [14]

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>

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