biancawilliams707 biancawilliams707
  • 14-11-2020
  • Mathematics
contestada

solve each equation by elimination
[tex]x + y = 8 \\ x - y = 10[/tex]
​

Respuesta :

oscar236
oscar236 oscar236
  • 14-11-2020

Answer:

The solution is  x = 9, y = -1.

Step-by-step explanation:

x + y = 8

x -  y = 10       Adding to eliminate y:

2x + 0 = 18

x = 9               Substituting x = 9 into the first equation:

9 + y = 8

y = 8 - 9

y = -1..

Answer Link

Otras preguntas

find the product and simplify your answer. 5x(3x5+2x-2)​
Frederick taylor popularized the idea of improving work through observation and​ analysis, known as
Find the coordinates for the mid point with endpoints (3,5) and (-2,0)
Interest earned on bonds issued by a state government is fully taxable. a. True b. False
Hamilton’s economic plan was designed to
I’m completely dumb so can someone help me
Name blood vessels 3
Using the quadratic formula to solve for x^2=5x-x, what are the values of x?
Waves with an amplitude of 2ft pass a doc every 30 seconds. Write an equation for a cosine model the height of a water particle above and below the mean water l
How much o2 reacts completely with 4.0 moles of ch3oh in the reaction 2 ch3oh + 3 o2 → 2 co2 + 4 h2o ?