londielon
londielon londielon
  • 02-04-2020
  • Mathematics
contestada

- 8x-10y=20
-8x - 6y=-4

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 02-04-2020

Answer:

x=5 y =-6

Step-by-step explanation:

- 8x-10y=20

-8x - 6y=-4

Multiply the first equation by -1

8x +10y=-20

Add this to the second equation

8x +10y=-20

-8x - 6y=-4

------------------

      4y = -24

Divide each side by 4

4y/4 = -24/4

y = -6

Now we need to solve for x

8x +10(-6) = -20

8x -60 = -20

Add 60 to each side

8x -60+60 = -20+60

8x = 40

Divide each side by 8

8x/8 = 40/8

x =5

Answer Link

Otras preguntas

For the reaction represented by the equation 2h+O2– 2H2O, how may grams of water are produced from 6.00 mol of hydrogen? Atomic mass of hyorogen = 1.0gmol Atomi
Evaluate. 23+4⋅2−7 1 5 9 36
why is ecology all about action and reaction?​
Simplify 2(7n + 5m – 3m)
You have been contracted to design an improved customer service tracking software. Use the drop-down menu to organize the steps you will take in writing the pro
Which expression represents "thirty-eight less than the sum of forty and nineteen"? A 38 – 40 + 19 ® 38 - (40 – 19) 19+ (40 – 38) D (40+ 19) – 38
Given m||n, find the value of x. + (6x+10) (10x+10)°
How does this passageusechracterization to reveal Anne's feelings​
how would i convert a percentage into a decimal
1. My sister got married last week. ____________ wedding was fantastic.a. Hersb. Herc. She’sd. Hime. His​