cas0sikinnorac
cas0sikinnorac cas0sikinnorac
  • 23-07-2016
  • Mathematics
contestada

how to do this equation by elimination 8x 14y= 4 and -6 -7y =-10

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 23-07-2016
eliminate the y terms

multiply -6x-7y=-10 by 2 and add to other equaiation

8x+14y=4
-12x-14y=-20+
-4x+0y=-16

-4x=-16
divide both sides by -4
x=4
sub back

-6x-7y=-10
-6(4)-7y=-10
-24-7y=-10
add 24 o both sides
-7y=14
divide both sides by -7
y=-2

x=4
y=-2
(4,-2)
Answer Link

Otras preguntas

Is this correct, So you need correct capitalized errors.
Angles A and B are complementary to each other. If m2A = 26° + x and m2B - 38° + X, what is the value of x? A.) 13 B.) 14 C.) 58 D.) 18
I NEED HELPPPP PLEASE
as air is warmed by the surface of the earth, ita. condensesb. sinksc. risesb. boils​
Your small business spent $40 on food and another $60 on materials. Then, you sold an item for $120, but you had to pay a $90 service fee. Finally, you were giv
what is the greatest common factor of__, 18, 42,96?​
What do we need more of in the beauty industry?
Who is most at risk? 1: Drivers who have traditional work schedules. 2: Experienced drivers. 3: Drivers who are driving long distances without rest breaks.. 4:
what is the value of x?
herical piece of candy is suspended in flowing water. The candy has a density of 1950 kg/m3 and has a 1.0 cm diameter. The water velocity is 1.0 m/s, the water