kristinab25 kristinab25
  • 02-10-2020
  • Mathematics
contestada

3x + 2y = -9
4x - 2y = -26
please help I have to solve this with the elimination method

Respuesta :

jimrgrant1 jimrgrant1
  • 02-10-2020

Answer:

x = - 5, y = 3

Step-by-step explanation:

Given the 2 equations

3x + 2y = - 9 → (1)

4x - 2y = - 26 → (2)

Adding (1) and (2) term by term eliminates the y- term, that is

7x = - 35 ( divide both sides by 7 )

x = - 5

Substitute x = - 5 into either of the 2 equations and solve for y

Substituting into (1)

3(- 5) + 2y = - 9

- 15 + 2y = - 9 ( add 15 to both sides )

2y = 6 ( divide both sides by 2 )

y = 3

Answer Link

Otras preguntas

Addison studies a tarantula that is 30 mm long suppose she uses a microscope to magnify the spider by 4×10 to the second power how long will the spider appear t
There are 35 boys in sixth grade. The number of girls in the sixth grade is 42. Lonnie says that means the ratio of number of boys in the sixth grade to number
What is the greatest common factor of 142 and 148
When rolling a number cube 50 times, how many times would you expect it to land on five?
Round 681,542 to the nearest hundred thousand
divide 18 cups if flour into two groups so the ratio is 4 to 5
What is the value of the three in 310.25
H(x)=(x^2)+1 and K(x)=-(x^2)+4. If K(H)=0, what are the roots/solutions? a. ±i√3 b. ±i c. ±2 d. ±1 e. ±1, ±i
Tina bought some nail polish and lip gloss at the store. The nail polish cost $4.50 per bottle and lipgloss cost $7 per tube. Tina bought 9 items and spent $50.
how do you write 35.2 in word form?